<SEC-DOCUMENT>0001193125-17-256050.txt : 20170914
<SEC-HEADER>0001193125-17-256050.hdr.sgml : 20170914
<ACCEPTANCE-DATETIME>20170811165508
<PRIVATE-TO-PUBLIC>
ACCESSION NUMBER:		0001193125-17-256050
CONFORMED SUBMISSION TYPE:	CORRESP
PUBLIC DOCUMENT COUNT:		1
FILED AS OF DATE:		20170811

FILER:

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			NUVEEN CALIFORNIA SELECT TAX FREE INCOME PORTFOLIO
		CENTRAL INDEX KEY:			0000885732
		IRS NUMBER:				363828111
		STATE OF INCORPORATION:			MA

	FILING VALUES:
		FORM TYPE:		CORRESP

	BUSINESS ADDRESS:	
		STREET 1:		333 W WACKER DR
		CITY:			CHICAGO
		STATE:			IL
		ZIP:			60606
		BUSINESS PHONE:		3129178200

	MAIL ADDRESS:	
		STREET 1:		333 W WACKER DRIVE
		CITY:			CHICAGO
		STATE:			IL
		ZIP:			60606

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	NUVEEN INSURED CALIFORNIA SELECT TAX FREE INCOME PORTFOLIO
		DATE OF NAME CHANGE:	19920929

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	NUVEEN CALIFORNIA SELECT TAX FREE INCOME PORTFOLIO
		DATE OF NAME CHANGE:	19600201
</SEC-HEADER>
<DOCUMENT>
<TYPE>CORRESP
<SEQUENCE>1
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<TITLE>Nuveen California Select Tax-Free Income Portfolio</TITLE>
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 <P STYLE="margin-top:0pt; margin-bottom:0pt; font-size:10pt; font-family:Times New Roman" ALIGN="center">Nuveen Investments </P>
<P STYLE="margin-top:0pt; margin-bottom:0pt; font-size:10pt; font-family:Times New Roman" ALIGN="center">333 West Wacker Drive </P> <P STYLE="margin-top:0pt; margin-bottom:0pt; font-size:10pt; font-family:Times New Roman" ALIGN="center">Chicago, IL
60606 </P> <P STYLE="margin-top:0pt; margin-bottom:0pt; font-size:10pt; font-family:Times New Roman" ALIGN="center">P 312.917.7700 </P>
<P STYLE="margin-top:0pt; margin-bottom:0pt; font-size:10pt; font-family:Times New Roman" ALIGN="center">www.nuveen.com </P> <P STYLE="margin-top:12pt; margin-bottom:0pt; font-size:10pt; font-family:Times New Roman">August&nbsp;11, 2017 </P>
<P STYLE="margin-top:12pt; margin-bottom:0pt; font-size:10pt; font-family:Times New Roman"><B><U>VIA EDGAR </U></B></P> <P STYLE="margin-top:12pt; margin-bottom:0pt; font-size:10pt; font-family:Times New Roman">U.S. Securities and Exchange
Commission </P> <P STYLE="margin-top:0pt; margin-bottom:0pt; font-size:10pt; font-family:Times New Roman">100 F Street, NE </P> <P STYLE="margin-top:0pt; margin-bottom:0pt; font-size:10pt; font-family:Times New Roman">Washington, DC 20549 </P>
<P STYLE="margin-top:12pt; margin-bottom:0pt; font-size:10pt; font-family:Times New Roman">Attn:&nbsp;&nbsp; Mr.&nbsp;Mark Cowan </P> <P STYLE="font-size:12pt;margin-top:0pt;margin-bottom:0pt">&nbsp;</P>
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<TD WIDTH="4%" VALIGN="top" ALIGN="left">Re:</TD>
<TD ALIGN="left" VALIGN="top"><U>Request for Acceleration of the Effective Date of Nuveen California Select <FONT STYLE="white-space:nowrap">Tax-Free</FONT> Income Portfolio&#146;s <FONT STYLE="white-space:nowrap">Pre-Effective</FONT> Amendment
No.</U><U></U><U>&nbsp;1 Under the Securities Act of 1933 and Amendment No.</U><U></U><U>&nbsp;4 Under the Investment Company Act of 1940 (File Nos: <FONT STYLE="white-space:nowrap">333-212519</FONT> and
<FONT STYLE="white-space:nowrap">811-06623)</FONT></U> </TD></TR></TABLE> <P STYLE="margin-top:12pt; margin-bottom:0pt; font-size:10pt; font-family:Times New Roman">Dear Mr.&nbsp;Cowan: </P>
<P STYLE="margin-top:12pt; margin-bottom:0pt; font-size:10pt; font-family:Times New Roman">Pursuant to Rule 461 under the Securities Act of 1933, as amended, we hereby request that the effective date of the above-captioned Registration Statement be
accelerated so that the same will become effective Monday, August&nbsp;14, 2017, or as soon thereafter as practicable. </P> <P STYLE="margin-top:12pt; margin-bottom:0pt; font-size:10pt; font-family:Times New Roman">In connection with this request,
Nuveen Securities, LLC, the underwriter for the Fund, has also signed this letter requesting acceleration. </P> <P STYLE="margin-top:12pt; margin-bottom:0pt; font-size:10pt; font-family:Times New Roman">Very truly yours, </P>
<P STYLE="font-size:12pt;margin-top:0pt;margin-bottom:0pt">&nbsp;</P>
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<TD VALIGN="top">Nuveen California Select <FONT STYLE="white-space:nowrap">Tax-Free</FONT> Income Portfolio</TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
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<TD VALIGN="bottom">&nbsp;</TD>
<TD VALIGN="top">Nuveen Securities, LLC</TD></TR>
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<TD VALIGN="bottom"> <P STYLE="margin-top:0pt; margin-bottom:1pt; border-bottom:1px solid #000000; font-size:10pt; font-family:Times New Roman">/s/ Gifford R. Zimmerman</P></TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
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<TD VALIGN="bottom">&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="margin-top:0pt; margin-bottom:1pt; border-bottom:1px solid #000000; font-size:10pt; font-family:Times New Roman">/s/ Gifford R. Zimmerman</P></TD></TR>
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<TD VALIGN="bottom">By: Gifford R. Zimmerman</TD>
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<TD VALIGN="bottom">&nbsp;</TD>
<TD VALIGN="bottom">By: Gifford R. Zimmerman</TD></TR>
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<TD VALIGN="bottom">Title: Vice President and Secretary</TD>
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<TD VALIGN="bottom">Title: Managing Director</TD></TR>
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