Exhibit (c)(6)

                        HIGH RIVER LIMITED PARTNERSHIP

                                        September 12, 1995

          Robert A. McNeil
          Carole J. McNeil
          McNeil Partners, L.P.
          13760 Noel Road, Suite 700
          Dallas, Texas  75240

          Dear Mr. and Mrs. McNeil:

                    Reference is made to the letter agreement among
          the undersigned and McNeil Partners, L.P. dated August
          24, 1995, as amended by the letter agreement among the
          undersigned and McNeil Partners, L.P., Inc. dated
          September 7, 1995 (the "August 24th Letter Agreement"). 
          Capitalized term used but not defined herein shall have
          the meanings ascribed to them in the August 24th Letter
          Agreement.

                    The parties to this letter agreement hereby
          agree that, except as otherwise hereafter agreed in
          writing by the such parties:

               1.   The August 24th Letter Agreement is hereby
          amended by substituting "September 15, 1995" for
          "September 12, 1995" in paragraphs 1, 2, 3, 5 and 6 of
          such August 24th Letter Agreement.

               2.   McNeil Partners shall have the absolute right,
          from time to time through 12 o'clock noon on September
          14, 1995, to require High River to extend, and upon
          receipt of written notice from McNeil Partners, High
          River shall unconditionally extend, the expiration date
          of the Offers to Purchase and High River shall, upon
          receipt of such notice, issue a press release no later
          than the next business day announcing such extension;
          provided, however, under no circumstances shall McNeil
          Partners have the right to require High River to extend
          the expiration date of the Offers to Purchase beyond
          September 28, 1995.

               3.   Each party to this letter agreement represents
          and warrants to the other party that during the period
          commencing upon the termination of its obligations under
          Paragraphs 1, 2, 3, 5 and 6 of the August 24th Letter
          Agreement (the "Obligations") and ending upon the
          execution of this letter agreement, it has not done any
          act which would have violated the Obligations had they
          been in effect at that time. 

               4.   Notwithstanding Paragraph 5 of the August 24th
          Letter Agreement, McNeil Partners may, in its discretion,
          mail or cause to be mailed to limited partners of the
          Partnerships, the attached press release.

               5.   Nothing in this letter agreement shall be
          deemed to be, or shall be, a waiver by either party to
          this letter agreement of the respective rights under the
          August 24th Letter Agreement or the letter agreement
          dated September 7, 1995 among the undersigned and McNeil
          Partners.

               If the foregoing is acceptable to you, please so
          indicate by executing this letter in the space provided
          below.

                                   Very truly yours,

                                   High River Limited Partnership

                                        By: Riverdale Investors Corp., Inc.

                                        /s/ Edward E. Mattner      
                                        _____________________________ 
                                        Edward E. Mattner

                                   /s/ Carl C. Icahn           
                                   __________________________
                                   Carl C. Icahn

          Agreed and Accepted

          McNeil Partners, L.P.

               By:  McNeil Investors, Inc.

               /s/ Robert A. McNeil          
               ________________________
               Robert A. McNeil
               Chairman

               /s/ Carole J. McNeil           
               ________________________
               Carole J. McNeil 
               Co-Chairman


          CONTACT: D.F. King & Co., Inc.     The Herman Group, Inc.
                   (800) 628-8538            (800) 658-2007

          FOR IMMEDIATE RELEASE 

                      HIGH RIVER TENDER OFFERS FOR MCNEIL 
                         LIMITED PARTNERSHIPS EXTENDED 

                    Dallas, Texas and New York, New York, September
          12, 1995--High River Limited Partnership announced today
          that it has extended the expiration date of its tender
          offers (the "Tender Offers") for units of limited
          partnership interest in each of McNeil Pacific Investors
          Fund 1972, McNeil Real Estate Fund V, Ltd., McNeil Real
          Estate Fund IX, Ltd., McNeil Real Estate Fund X, Ltd.,
          McNeil Real Estate Fund XI, Ltd., McNeil Real Estate Fund
          XIV, Ltd., McNeil Real Estate Fund XV, Ltd., McNeil Real
          Estate Fund XX, L.P., McNeil Real Estate Fund XXIV, L.P.
          and McNeil Real Estate Fund XXV, L.P. (collectively, the
          "Partnerships") until 12:00 midnight, New York City time,
          on September 25, 1995.  

                    High River and McNeil Partners, L.P., the general
          partner of each of the Partnerships ("McNeil Partners"),
          are currently engaged in settlement discussions which,
          among other things, may result in settlement of litigation
          with respect to the Tender Offers.  No assurance can be
          given as to the outcome of those discussions.  

                    The Tender Offers are being made pursuant to the
          Offers to Purchase dated August 3, 1995, as amended and
          supplemented.