-----BEGIN PRIVACY-ENHANCED MESSAGE-----
Proc-Type: 2001,MIC-CLEAR
Originator-Name: webmaster@www.sec.gov
Originator-Key-Asymmetric:
 MFgwCgYEVQgBAQICAf8DSgAwRwJAW2sNKK9AVtBzYZmr6aGjlWyK3XmZv3dTINen
 TWSM7vrzLADbmYQaionwg5sDW3P6oaM5D3tdezXMm7z1T+B+twIDAQAB
MIC-Info: RSA-MD5,RSA,
 A0CoHc4q7CUyh6nGFsrC8NQoFCsaK0O5sC0WopxU4JSnRnmm2S3TSAIAjJtk+WXW
 WFl3GGN6d8HfDBeHF0Phrw==

<SEC-DOCUMENT>0001104659-06-079001.txt : 20061204
<SEC-HEADER>0001104659-06-079001.hdr.sgml : 20061204
<ACCEPTANCE-DATETIME>20061201174518
ACCESSION NUMBER:		0001104659-06-079001
CONFORMED SUBMISSION TYPE:	8-K
PUBLIC DOCUMENT COUNT:		2
CONFORMED PERIOD OF REPORT:	20061201
ITEM INFORMATION:		Regulation FD Disclosure
FILED AS OF DATE:		20061204
DATE AS OF CHANGE:		20061201

FILER:

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			INTERNATIONAL BANCSHARES CORP
		CENTRAL INDEX KEY:			0000315709
		STANDARD INDUSTRIAL CLASSIFICATION:	STATE COMMERCIAL BANKS [6022]
		IRS NUMBER:				742157138
		STATE OF INCORPORATION:			TX
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		8-K
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	000-09439
		FILM NUMBER:		061252239

	BUSINESS ADDRESS:	
		STREET 1:		12OO SAN BERNARDO AVE
		STREET 2:		PO BOX 1359
		CITY:			LAREDO
		STATE:			TX
		ZIP:			78040-1359
		BUSINESS PHONE:		9567227611

	MAIL ADDRESS:	
		STREET 1:		P O BOX 1359
		STREET 2:		1200 SAN BERNARDO
		CITY:			LAREDO
		STATE:			TX
		ZIP:			78040
</SEC-HEADER>
<DOCUMENT>
<TYPE>8-K
<SEQUENCE>1
<FILENAME>a06-24874_18k.htm
<DESCRIPTION>CURRENT REPORT OF MATERIAL EVENTS OR CORPORATE CHANGES
<TEXT>
<html>

<head>






</head>

<body lang="EN-US">

<div style="font-family:Times New Roman;">
 <div style="border:none;border-top:double windowtext 6.0pt;padding:0pt 0pt 0pt 0pt;"> <p style="border:none;margin:0pt 0pt .0001pt;padding:0pt;"><a name="scotch"></a></p> </div>

<p style="font-weight:bold;margin:0pt 0pt .0001pt;page-break-after:avoid;text-align:center;"><b><font size="5" face="Times New Roman" style="font-size:18.0pt;">UNITED STATES</font></b></p>

<p style="font-weight:bold;margin:0pt 0pt .0001pt;page-break-after:avoid;text-align:center;"><b><font size="5" face="Times New Roman" style="font-size:18.0pt;">SECURITIES AND EXCHANGE COMMISSION</font></b></p>

<p style="font-weight:bold;margin:0pt 0pt 12.0pt;page-break-after:avoid;text-align:center;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;">Washington,
D.C.&#160; 20549</font></b></p>

<p style="font-weight:bold;margin:0pt 0pt 12.0pt;page-break-after:avoid;text-align:center;"><b><font size="5" face="Times New Roman" style="font-size:18.0pt;">FORM 8-K</font></b></p>

<p style="font-weight:bold;margin:0pt 0pt .0001pt;page-break-after:avoid;text-align:center;"><b><font size="3" face="Times New Roman" style="font-size:12.0pt;">CURRENT REPORT</font></b></p>

<p style="font-weight:bold;margin:0pt 0pt 12.0pt;page-break-after:avoid;text-align:center;"><b><font size="3" face="Times New Roman" style="font-size:12.0pt;">Pursuant to Section 13 OR 15(d) of The
Securities Exchange Act of 1934</font></b></p>

<p style="margin:0pt 0pt 12.0pt;page-break-after:avoid;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Date of Report (Date of
earliest event reported): <b>December 1, 2006</b></font></p>

<p style="font-weight:bold;margin:0pt 0pt .0001pt;page-break-after:avoid;text-align:center;"><b><font size="5" face="Times New Roman" style="font-size:18.0pt;">INTERNATIONAL BANCSHARES CORPORATION</font></b></p>

<p style="margin:0pt 0pt 12.0pt;page-break-after:avoid;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">(Exact Name of Registrant
as Specified in its Charter)</font></p>

<div align="center">

<table border="0" cellspacing="0" cellpadding="0" width="100%" style="border-collapse:collapse;width:100.0%;">
 <tr>
  <td width="31%" valign="top" style="padding:0pt .7pt 0pt .7pt;width:31.74%;">
  <p align="center" style="font-size:10.0pt;margin:0pt 0pt .0001pt;text-align:center;"><!-- SET mrlNoTableShading --><b>Texas</b></p>
  </td>
  <td width="2%" valign="bottom" style="padding:0pt .7pt 0pt .7pt;width:2.38%;">
  <p align="center" style="margin:0pt 0pt .0001pt;text-align:center;"><b><font size="2" face="Times New Roman" style="font-size:1.0pt;font-weight:bold;">&nbsp;</font></b></p>
  </td>
  <td width="31%" valign="top" style="padding:0pt .7pt 0pt .7pt;width:31.74%;">
  <p align="center" style="margin:0pt 0pt .0001pt;text-align:center;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">0-9439</font></b></p>
  </td>
  <td width="2%" valign="bottom" style="padding:0pt .7pt 0pt .7pt;width:2.38%;">
  <p align="center" style="margin:0pt 0pt .0001pt;text-align:center;"><b><font size="2" face="Times New Roman" style="font-size:1.0pt;font-weight:bold;">&nbsp;</font></b></p>
  </td>
  <td width="31%" valign="top" style="padding:0pt .7pt 0pt .7pt;width:31.74%;">
  <p align="center" style="margin:0pt 0pt .0001pt;text-align:center;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">74-2157138</font></b></p>
  </td>
 </tr>
 <tr>
  <td width="31%" valign="top" style="padding:0pt .7pt 0pt .7pt;width:31.74%;">
  <p align="center" style="margin:0pt 0pt .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">(State or other
  Jurisdiction</font></p>
  </td>
  <td width="2%" valign="bottom" style="padding:0pt .7pt 0pt .7pt;width:2.38%;">
  <p align="center" style="margin:0pt 0pt .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="31%" valign="top" style="padding:0pt .7pt 0pt .7pt;width:31.74%;">
  <p align="center" style="margin:0pt 0pt .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">(Commission</font></p>
  </td>
  <td width="2%" valign="bottom" style="padding:0pt .7pt 0pt .7pt;width:2.38%;">
  <p align="center" style="margin:0pt 0pt .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="31%" valign="top" style="padding:0pt .7pt 0pt .7pt;width:31.74%;">
  <p align="center" style="margin:0pt 0pt .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">(I.R.S. Employer</font></p>
  </td>
 </tr>
 <tr>
  <td width="31%" valign="top" style="padding:0pt .7pt 0pt .7pt;width:31.74%;">
  <p align="center" style="margin:0pt 0pt .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">of incorporation
  or organization)</font></p>
  </td>
  <td width="2%" valign="bottom" style="padding:0pt .7pt 0pt .7pt;width:2.38%;">
  <p align="center" style="margin:0pt 0pt .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="31%" valign="top" style="padding:0pt .7pt 0pt .7pt;width:31.74%;">
  <p align="center" style="margin:0pt 0pt .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">File Number)</font></p>
  </td>
  <td width="2%" valign="bottom" style="padding:0pt .7pt 0pt .7pt;width:2.38%;">
  <p align="center" style="margin:0pt 0pt .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="31%" valign="top" style="padding:0pt .7pt 0pt .7pt;width:31.74%;">
  <p align="center" style="margin:0pt 0pt .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Identification
  No.)</font></p>
  </td>
 </tr>
</table>

</div>

<p style="line-height:1.0pt;margin:0pt 0pt 12.0pt;"><font size="1" face="Times New Roman">&nbsp;</font></p>

<div align="center">

<table border="0" cellspacing="0" cellpadding="0" width="100%" style="border-collapse:collapse;width:100.0%;">
 <tr>
  <td width="48%" valign="top" style="padding:0pt .7pt 0pt .7pt;width:48.8%;">
  <p align="center" style="font-size:10.0pt;margin:0pt 0pt .0001pt;text-align:center;"><!-- SET mrlNoTableShading --><b>1200 San Bernardo, Laredo, Texas</b></p>
  </td>
  <td width="2%" valign="bottom" style="padding:0pt .7pt 0pt .7pt;width:2.38%;">
  <p align="center" style="margin:0pt 0pt .0001pt;text-align:center;"><b><font size="2" face="Times New Roman" style="font-size:1.0pt;font-weight:bold;">&nbsp;</font></b></p>
  </td>
  <td width="48%" valign="top" style="padding:0pt .7pt 0pt .7pt;width:48.8%;">
  <p align="center" style="margin:0pt 0pt .0001pt;text-align:center;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">78040-1359</font></b></p>
  </td>
 </tr>
 <tr>
  <td width="48%" valign="top" style="padding:0pt .7pt 0pt .7pt;width:48.8%;">
  <p align="center" style="margin:0pt 0pt .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">(Address of
  principal executive offices)</font></p>
  </td>
  <td width="2%" valign="bottom" style="padding:0pt .7pt 0pt .7pt;width:2.38%;">
  <p align="center" style="margin:0pt 0pt .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="48%" valign="top" style="padding:0pt .7pt 0pt .7pt;width:48.8%;">
  <p align="center" style="margin:0pt 0pt .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">(ZIP Code)</font></p>
  </td>
 </tr>
</table>

</div>

<p style="line-height:1.0pt;margin:0pt 0pt 12.0pt;"><font size="1" face="Times New Roman">&nbsp;</font></p>

<p style="margin:0pt 0pt 12.0pt;page-break-after:avoid;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">(Registrant&#146;s telephone
number, including area code)&#160; <b>(956) 722-7611</b></font></p>

<p style="font-weight:bold;margin:0pt 0pt .0001pt;page-break-after:avoid;text-align:center;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;">None</font></b></p>

<p style="margin:0pt 0pt 12.0pt;page-break-after:avoid;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">(Former name or former
address, if changed since last report)</font></p>

<p style="margin:0pt 0pt 12.0pt;page-break-after:avoid;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Check the
appropriate box below if the Form 8-K filing is intended to simultaneously
satisfy the filing obligation of the registrant under any of the following
provisions (see General Instruction A.2. below):</font></p>

<p style="font-size:10.0pt;margin:0pt 0pt 12.0pt 36.0pt;text-indent:-36.0pt;"><font size="2" face="Wingdings" style="font-size:10.0pt;">o</font><font size="1" style="font-size:3.0pt;">&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160; </font>Written
communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)</p>

<p style="font-size:10.0pt;margin:0pt 0pt 12.0pt 36.0pt;text-indent:-36.0pt;"><font size="2" face="Wingdings" style="font-size:10.0pt;">o</font><font size="1" style="font-size:3.0pt;">&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160; </font>Soliciting
material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)</p>

<p style="font-size:10.0pt;margin:0pt 0pt 12.0pt 36.0pt;text-indent:-36.0pt;"><font size="2" face="Wingdings" style="font-size:10.0pt;">o</font><font size="1" style="font-size:3.0pt;">&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160; </font>Pre-commencement
communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR
240.14d-2(b))</p>

<p style="font-size:10.0pt;margin:0pt 0pt 12.0pt 36.0pt;text-indent:-36.0pt;"><font size="2" face="Wingdings" style="font-size:10.0pt;">o</font><font size="1" style="font-size:3.0pt;">&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160; </font>Pre-commencement
communications pursuant to Rule 13e-4 (c) under the Exchange Act (17 CFR
250.13e-4 (c))</p>


 <div style="border:none;border-bottom:double windowtext 6.0pt;padding:0pt 0pt 0pt 0pt;"> <p style="border:none;margin:0pt 0pt .0001pt;padding:0pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p> </div>
</div><br><hr size="3" width="100%" noshade color="#010101" align="center">

<!-- SEQ.=1,FOLIO='',FILE='C:\fc\33514517786_H10771_1530997\24874-1-be.htm',USER='jmsproofassembler',CD='Dec  1 14:51 2006' -->



<br clear="all" style="page-break-before:always;">

<div style="font-family:Times New Roman;">
 <p style="margin:0pt 0pt .0001pt;text-align:center;"></p>

<p style="margin:0pt 0pt 12.0pt;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">Item 7.01 - Regulation FD
Disclosure</font></b></p>

<p style="margin:0pt 0pt 12.0pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">On December 1, 2006,
International Bancshares Corporation (&#147;IBC&#148;) issued a news release together
with Southwest First Community, Inc. (&#147;Southwest Community) announcing that on
December 1, 2006, they signed a definitive agreement pursuant to which IBC will
acquire Southwest Community, an approximately $129 million asset holding
company that owns State Bank &amp; Trust in Beeville, Texas and Commercial
State Bank in Sinton, Texas.</font></p>

<p style="margin:0pt 0pt 12.0pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">All of the information
furnished in Item 7.01 of this report and the accompanying exhibit shall not be
deemed to be &#147;filed&#148; for the purposes of Section 18 of the Securities and
Exchange Act of 1934, as amended, is not subject to the liabilities of that
section and shall not be incorporated by reference in any filing under the
Securities Act of 1933, as amended.</font></p>

<p align="center" style="margin:0pt 0pt 12.0pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">SIGNATURES</font></p>

<p style="margin:0pt 0pt 12.0pt;text-indent:36.0pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Pursuant to the requirements of the Securities
Exchange Act of 1934, the registrant has duly caused this report to be signed
on its behalf by the undersigned hereunto duly authorized.</font></p>

<table border="0" cellspacing="0" cellpadding="0" width="100%" style="border-collapse:collapse;width:100.0%;">
 <tr>
  <td width="48%" valign="top" style="padding:0pt .7pt 0pt 0pt;width:48.78%;">
  <p style="margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="51%" colspan="3" valign="top" style="padding:0pt .7pt 0pt 0pt;width:51.22%;">
  <p style="font-size:10.0pt;margin:0pt 0pt .0001pt;"><!-- SET mrlNoTableShading -->INTERNATIONAL BANCSHARES CORPORATION</p>
  </td>
 </tr>
 <tr>
  <td width="48%" valign="top" style="padding:0pt .7pt 0pt 0pt;width:48.78%;">
  <p style="margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="51%" colspan="3" valign="top" style="padding:0pt .7pt 0pt 0pt;width:51.22%;">
  <p style="margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;&nbsp;(Registrant)</font></p>
  </td>
 </tr>
 <tr>
  <td width="48%" valign="top" style="padding:0pt .7pt 0pt 0pt;width:48.78%;">
  <p style="margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
  <td width="51%" colspan="3" valign="top" style="padding:0pt .7pt 0pt 0pt;width:51.22%;">
  <p style="margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
 </tr>
 <tr>
  <td width="48%" valign="top" style="padding:0pt .7pt 0pt 0pt;width:48.78%;">
  <p style="margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="3%" valign="top" style="padding:0pt .7pt 0pt 0pt;width:3.88%;">
  <p style="margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">By:</font></p>
  </td>
  <td width="36%" valign="top" style="border:none;border-bottom:solid windowtext 1.0pt;padding:0pt .7pt 0pt 0pt;width:36.94%;">
  <p style="margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">/s/ DENNIS E. NIXON</font></p>
  </td>
  <td width="10%" valign="top" style="padding:0pt .7pt 0pt 0pt;width:10.4%;">
  <p style="margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
 </tr>
 <tr>
  <td width="48%" valign="top" style="padding:0pt .7pt 0pt 0pt;width:48.78%;">
  <p style="margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="3%" valign="top" style="padding:0pt .7pt 0pt 0pt;width:3.88%;">
  <p style="margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="47%" colspan="2" valign="top" style="padding:0pt .7pt 0pt 0pt;width:47.34%;">
  <p style="margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">DENNIS E. NIXON,
  President and Chairman <br>
  of the Board</font></p>
  </td>
 </tr>
</table>

<p style="line-height:1.0pt;margin:0pt 0pt 12.0pt;"><font size="1" face="Times New Roman">&nbsp;</font></p>

<p style="margin:0pt 0pt 12.0pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Date:
December 1, 2006</font></p>


 <p style="font-size:10.0pt;margin:24.0pt 0pt .0001pt;text-align:center;"><font face="Times New Roman">2</font></p>
</div><br><hr size="3" width="100%" noshade color="#010101" align="center">

<!-- SEQ.=1,FOLIO='2',FILE='C:\fc\33511595092_H10771_1530597\24874-1-di.htm',USER='jmsproofassembler',CD='Dec  1 11:59 2006' -->



<br clear="all" style="page-break-before:always;">

<div style="font-family:Times New Roman;">
 <p style="margin:0pt 0pt .0001pt;text-align:center;"></p>

<p align="center" style="margin:0pt 0pt 12.0pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">EXHIBIT
INDEX</font></p>

<table border="0" cellspacing="0" cellpadding="0" width="100%" style="border-collapse:collapse;width:100.0%;">
 <tr style="page-break-inside:avoid;">
  <td width="15%" valign="top" style="border:none;border-bottom:solid windowtext 1.0pt;padding:0pt .7pt 0pt 0pt;width:15.08%;">
  <p style="font-size:10.0pt;margin:0pt 0pt .0001pt;"><!-- SET mrlNoTableShading -->Exhibit Number</p>
  </td>
  <td width="2%" valign="top" style="padding:0pt .7pt 0pt 0pt;width:2.38%;">
  <p style="margin:0pt 0pt .0001pt;"><u><font size="2" face="Times New Roman" style="font-size:1.0pt;"><font style="text-decoration:none;">&nbsp;</font></font></u></p>
  </td>
  <td width="67%" valign="top" style="border:none;border-bottom:solid windowtext 1.0pt;padding:0pt .7pt 0pt 0pt;width:67.7%;">
  <p style="margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Description</font></p>
  </td>
  <td width="3%" valign="top" style="padding:0pt .7pt 0pt 0pt;width:3.6%;">
  <p style="margin:0pt 0pt .0001pt;"><u><font size="2" face="Times New Roman" style="font-size:1.0pt;"><font style="text-decoration:none;">&nbsp;</font></font></u></p>
  </td>
  <td width="11%" valign="top" style="border:none;border-bottom:solid windowtext 1.0pt;padding:0pt .7pt 0pt 0pt;width:11.24%;">
  <p style="margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Page Number</font></p>
  </td>
 </tr>
 <tr style="page-break-inside:avoid;">
  <td width="15%" valign="top" style="border:none;padding:0pt .7pt 0pt 0pt;width:15.08%;">
  <p style="margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
  <td width="2%" valign="top" style="padding:0pt .7pt 0pt 0pt;width:2.38%;">
  <p style="margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
  <td width="67%" valign="top" style="padding:0pt .7pt 0pt 0pt;width:67.7%;">
  <p style="margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
  <td width="3%" valign="top" style="padding:0pt .7pt 0pt 0pt;width:3.6%;">
  <p style="margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
  <td width="11%" valign="top" style="padding:0pt .7pt 0pt 0pt;width:11.24%;">
  <p style="margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
 </tr>
 <tr style="page-break-inside:avoid;">
  <td width="15%" valign="top" style="padding:0pt .7pt 0pt 0pt;width:15.08%;">
  <p style="margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">99.1</font></p>
  </td>
  <td width="2%" valign="top" style="padding:0pt .7pt 0pt 0pt;width:2.38%;">
  <p style="margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="67%" valign="top" style="padding:0pt .7pt 0pt 0pt;width:67.7%;">
  <p style="margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Press Release dated
  December 1, 2006.</font></p>
  </td>
  <td width="3%" valign="top" style="padding:0pt .7pt 0pt 0pt;width:3.6%;">
  <p style="margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="11%" valign="top" style="padding:0pt .7pt 0pt 0pt;width:11.24%;">
  <p style="margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">4</font></p>
  </td>
 </tr>
</table>

<p style="margin:0pt 0pt 12.0pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

</div><br><hr size="3" width="100%" noshade color="#010101" align="center">

<!-- SEQ.=1,FOLIO='',FILE='C:\fc\3351203263_H10771_1530597\24874-1-dk.htm',USER='jmsproofassembler',CD='Dec  1 12:00 2006' -->


</body>

</html>
</TEXT>
</DOCUMENT>
<DOCUMENT>
<TYPE>EX-99.1
<SEQUENCE>2
<FILENAME>a06-24874_1ex99d1.htm
<DESCRIPTION>EX-99
<TEXT>
<html>

<head>






</head>

<body lang="EN-US">

<div>
 <p style="margin:0pt 0pt .0001pt;text-align:center;"></p>

<p align="right" style="margin:0pt 0pt 12.0pt;text-align:right;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">EXHIBIT 99.1</font></b></p>

<table border="0" cellspacing="0" cellpadding="0" width="100%" style="border-collapse:collapse;font-family:Times New Roman;width:100.0%;">
 <tr style="page-break-inside:avoid;">
  <td width="8%" valign="top" style="padding:0pt .7pt 0pt 0pt;width:8.92%;">
  <p style="font-size:10.0pt;margin:0pt 0pt .0001pt;"><!-- SET mrlNoTableShading -->Contact: </p>
  </td>
  <td width="39%" valign="top" style="padding:0pt .7pt 0pt 0pt;width:39.62%;">
  <p style="margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Rosanne Palacios</font></p>
  </td>
  <td width="51%" valign="top" style="padding:0pt .7pt 0pt 0pt;width:51.48%;">
  <p style="margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Judith Wawroski</font></p>
  </td>
 </tr>
 <tr style="page-break-inside:avoid;">
  <td width="8%" valign="top" style="padding:0pt .7pt 0pt 0pt;width:8.92%;">
  <p style="margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="39%" valign="top" style="padding:0pt .7pt 0pt 0pt;width:39.62%;">
  <p style="margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">International Bancshares Corporation</font></p>
  </td>
  <td width="51%" valign="top" style="padding:0pt .7pt 0pt 0pt;width:51.48%;">
  <p style="margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">International Bancshares Corporation</font></p>
  </td>
 </tr>
 <tr style="page-break-inside:avoid;">
  <td width="8%" valign="top" style="padding:0pt .7pt 0pt 0pt;width:8.92%;">
  <p style="margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="39%" valign="top" style="padding:0pt .7pt 0pt 0pt;width:39.62%;">
  <p style="margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">(956) 722-7611</font></p>
  </td>
  <td width="51%" valign="top" style="padding:0pt .7pt 0pt 0pt;width:51.48%;">
  <p style="margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">(956) 722-7611</font></p>
  </td>
 </tr>
</table>

<p style="line-height:1.0pt;margin:0pt 0pt 12.0pt;"><font size="1" face="Times New Roman">&nbsp;</font></p>

<p style="margin:0pt 0pt 12.0pt;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">FOR
IMMEDIATE RELEASE:</font></b></p>

<p style="margin:0pt 0pt .0001pt;text-align:center;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">INTERNATIONAL BANCSHARES CORPORATION AGREES TO ACQUIRE</font></b></p><p style="margin:0pt 0pt 12.0pt;text-align:center;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">SOUTHWEST FIRST COMMUNITY, INC.</font></b></p>

<p style="margin:0pt 0pt 12.0pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">LAREDO, Texas&#151;(BUSINESS
WIRE) &#151; December 1, 2006 - International Bancshares Corporation (Nasdaq: IBOC)
and Southwest First Community, Inc. (&#147;Southwest Community&#148;) today announced
that they have signed a definitive agreement pursuant to which International
Bancshares Corporation will acquire Southwest Community, an approximately $129
million asset holding company that owns State Bank &amp; Trust in Beeville,
Texas and Commercial State Bank in Sinton, Texas.&#160; The acquisition will help IBC Bank&#146;s
continued expansion into certain regions in South Texas and complement certain
larger cities in South Texas that IBC Bank services.</font></p>

<p style="margin-left:0pt;margin-right:0pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&#147;We&#146;re
truly excited about our acquisition of Southwest Community,&#148; said International
Bancshares Corporation&#146;s Chairman, CEO &amp; President, Dennis E. Nixon. &#147;This
transaction will help expand IBC Bank&#146;s already large presence in the fast
growing South Texas market.&#160; Southwest
Community serves its markets in Beeville and Sinton, Texas with the same small
town philosophy that IBC Bank serves its customers.&#160; This merger presents a great opportunity for
the towns of Beeville and Sinton to enjoy a broader array of products and
additionally helps IBC Bank enhance its market share, earnings growth and
stockholder value with the added banks.&#148;</font></p>

<p style="margin-left:0pt;margin-right:0pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Chris
Moser, Southwest Community&#146;s Chairman &amp; CEO, commented, &#147;We believe our
stockholders and customers will find great value in this transaction. IBC Bank
brings strong resources, commercial lending, a strong international group and
good community banking ideals that will add tremendous competitive strength in
our marketplace.&#148;</font></p>

<p style="margin-left:0pt;margin-right:0pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">The
transaction is expected to close in the first quarter of 2007 and is subject to
various closing conditions, including receipt of all requisite regulatory
approvals and the approval of Southwest Community&#146;s stockholders. The Boards of
Directors of both International Bancshares Corporation and Southwest Community
have approved the transaction.</font></p>

<p style="margin-left:0pt;margin-right:0pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">IBC is a $10.7 billion multi-bank financial holding company
headquartered in Laredo, Texas, with over 205 facilities and over 330 ATMs
serving more than 90 communities in Texas and Oklahoma.</font></p>

<br><hr size="3" width="100%" noshade color="#010101" align="center">

<!-- SEQ.=1,FOLIO='',FILE='C:\fc\3351282284_H10771_1530672\24874-1-kw.htm',USER='jmsproofassembler',CD='Dec  1 12:08 2006' -->
<br clear="all" style="page-break-before:always;">
 <p style="margin:0pt 0pt .0001pt;text-align:center;"></p>


<p style="margin-left:0pt;margin-right:0pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p style="margin:0pt 0pt 12.0pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&#147;Safe Harbor&#148; statement
under the Private Securities Litigation Reform Act of 1995: The statements
contained in this release which are not historical facts contain
forward-looking information with respect to plans, projections or future
performance of IBC and its subsidiaries, the occurrence of which involve
certain risks and uncertainties detailed in IBC&#146;s filings with the Securities
and Exchange Commission.</font></p>

<p style="margin-left:0pt;margin-right:0pt;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">&nbsp;</font></b></p>

</div><br><hr size="3" width="100%" noshade color="#010101" align="center">

<!-- SEQ.=1,FOLIO='',FILE='C:\fc\3351282284_H10771_1530672\24874-1-kw.htm',USER='jmsproofassembler',CD='Dec  1 12:08 2006' -->


</body>

</html>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
-----END PRIVACY-ENHANCED MESSAGE-----
