<DOCUMENT>
<TYPE>EX-10.50A
<SEQUENCE>23
<FILENAME>p67178exv10w50a.txt
<DESCRIPTION>EX-10.50A
<TEXT>
<PAGE>

                                                                EXHIBIT 10.50A


                    AMENDMENT AND ADDENDUM TO PROMISSORY NOTE

      FOR VALUE RECEIVED, the undersigned, Five SAC Self-Storage Corporation, a
Nevada corporation ("Maker"), hereby amends that certain Promissory Note (the
"Note") dated as of July 1, 1998 in the original principal amount of $20,000,000
payable to the order of Nationwide Commercial Co. ("Payee"), as follows.
Capitalized words used herein and not otherwise defined herein have the meaning
ascribed to such words in the Note.

      Section 2(a) of the Note is hereby amended to provide that effective as of
April 1, 2002, Basic Interest (which, for clarity, includes Pay Rate Interest
and Deferred Interest) is payable on a monthly basis, in arrears, on the first
business day of each month throughout the term of the Note.

      In addition, Section 2(e) of the Note is hereby amended to provide that
effective as of April 1, 2002, Cash Flow Contingent Interest is payable on a
monthly basis, in arrears, on the first business day of the month throughout the
term of the Note.

      The Note remains in full force and effect and is not amended in any
respect, except as expressly provided herein.

      IN WITNESS WHEREOF, the undersigned executes this Amendment and Addendum
to Promissory Note as of April 16, 2002.


                                       Five SAC Self-Storage Corporation

                                       By: ____________________________
                                           Bruce Brockhagen, Secretary


      Payee hereby agrees and consents to the above-described amendment to the
Note this 16th day of April, 2002.

                                       Nationwide Commercial Co.


                                       By: ____________________________
                                           Gary B. Horton, Secretary


</TEXT>
</DOCUMENT>
