MCNEIL REAL ESTATE FUND XXVII, L.P.

    Question:      [Did you see the] liquidation values [of the McNeil
                   Partnerships] published ...?
    ICAHN:         "I DIDN'T LOOK AT THEM AT ALL ....  I DIDN'T LOOK AT
                   IT BECAUSE I DIDN'T CARE. I FIGURED--"
    Question:      You just throw out $150 million and you don't care?
    ICAHN:         "75% OF LIQUIDATING VALUE IS GOOD ENOUGH FOR ME. 
                   THAT'S WHAT I WANT TO PAY.  GOOD RETURN ON MY
                   MONEY."

                                  Excerpt from cross-examination of
                                  Carl C. Icahn, October 2, 1996
    Dear Unitholder:

    By now you should be very familiar with the name Carl C. Icahn. 
    Mr. "GOOD RETURN ON MY MONEY" Icahn, and his affiliate, High River
    Limited Partnership, are attempting through a "hostile" tender
    offer, litigation and bluster, to acquire control of McNeil Real
    Estate Fund XXVII, L.P. (the "Partnership").  In this regard, he is
    offering to buy your Units at prices below their values and making
    unfounded allegations about the Partnership and its General
    Partner.  

    You should be aware that Mr. Icahn has a long record of this type
    of "VULTURE" investing -- that is, acquiring large blocks of Units
    at prices that are inadequate and not in the best interests of
    either the respective Partnership or Unitholders.  He's now trying
    this same investment tactic with the Partnership.  HE'S TRYING TO
    TAKE ADVANTAGE OF YOU BY CONVINCING YOU THAT THE UNITS ARE A BAD
    INVESTMENT, WHILE AT THE SAME TIME BUYING THEM FOR $5.62 PER UNIT*,
    SIGNIFICANTLY LESS THAN THE RANGE OF PRESENT ESTIMATED LIQUIDATION
    VALUE DETERMINED BY AN INDEPENDENT FINANCIAL ADVISOR TO THE
    PARTNERSHIP.  MR. ICAHN'S OWN ADMISSION IN HIS CROSS-EXAMINATION ON
    OCTOBER 2 THAT HE IS OFFERING ONLY 75% OF HIS OWN LOW-BALL ESTIMATE
    of the value of the Units, and thereby realizing a "good return" at
    YOUR expense, speaks for itself.  IN FACT, MR. ICAHN'S OFFER PRICE
    IS ONLY BETWEEN 65.0% AND 67.1% OF THE PRESENT ESTIMATED
    LIQUIDATION VALUE OF THE UNITS DISCUSSED BELOW.

    *    STATEMENTS MADE BY MR. ICAHN AND HIGH RIVER IN THEIR RECENT
         LETTER TO YOU ARE FALSE AND INTENTIONALLY MISLEADING.  For
         instance, the amount of fees they claim McNeil Partners
         received includes money paid to affiliates of Southmark
         Corporation, an entity which is not affiliated with McNeil
         Partners and which filed for bankruptcy in 1989.  McNeil
         Partners replaced Southmark as the General Partner in the
         early 1990's.  At that time, Robert A. McNeil established a
         revolving credit facility which permitted the Partnership and
         other McNeil partnerships to borrow from the General Partner
         up to $5,000,000 in order to stabilize the Partnership and
         avoid a fire-sale of its assets in a depressed real estate
         market.  Under the stewardship of a well-capitalized McNeil
         Partners since 1991, the Partnership's financial condition has
         recovered significantly from its pre-1991 condition.

    *    Mr. Icahn is certainly not offering to buy your Units because
         he thinks they are a bad investment.  Fellow holders of 98.0%
         of the outstanding Units have chosen not to tender their Units
         as of November 1 and have rejected Mr. Icahn's offer.  IF YOU
         ARE ONE OF THE FEW WHO HAVE TENDERED  YOUR UNITS AND HAVE

    ________________________
    *  The offer price is $5.62 per Unit, not $6.19, because of the
    August, 1996 distribution to Unitholders of $0.57 per Unit.


         SECOND THOUGHTS ABOUT YOUR DECISION, WE HAVE INCLUDED FOR YOUR
         CONVENIENCE A FORM TO WITHDRAW YOUR TENDER. 

    IN LIGHT OF ALL RELEVANT CIRCUMSTANCES, INCLUDING THE INDEPENDENT
    OPINION OF CROSSON DANNIS, INC. THAT MR. ICAHN'S OFFER PRICE IS
    INADEQUATE FROM A FINANCIAL POINT OF VIEW, THE PARTNERSHIP
    DETERMINED THAT THE OFFER IS INADEQUATE, NOT IN THE BEST INTERESTS
    OF EITHER THE PARTNERSHIP OR UNITHOLDERS AND WE STRONGLY RECOMMEND
    THAT YOU REJECT IT.

    We urge you to consider the following points in making your
    determination whether to reject the offer:

    THE PRESENT ESTIMATED LIQUIDATION VALUE FOR THE UNITS AS OF OCTOBER
    3, 1996 IS BETWEEN $8.37 AND $8.64 PER UNIT.  Crosson Dannis, Inc.,
    an independent financial advisor to the Partnership, prepared an
    estimate of the present value (the "Present Estimated Liquidation
    Value") of a Unit based on the assumption that the Partnership
    completes an orderly liquidation by December 1999 (the
    "Liquidation"), during which time the Partnership will be
    distributing cash proceeds from the sale of the Partnership's
    properties as they are sold.  The Present Estimated Liquidation
    Value represents Crosson Dannis' estimate of the present value of
    the gross cash distributions, approximately $10.94 per Unit, that a
    Unitholder would receive between now and the completion of the
    Liquidation.  It should be noted that the Present Estimated
    Liquidation Value does not represent an estimate by Crosson Dannis
    of the fair market value of a Unit.  OF COURSE, IN HIS LETTER TO
    UNITHOLDERS, MR. ICAHN FAILED TO ADDRESS THE PRESENT ESTIMATED
    LIQUIDATION VALUE OF THE UNITS.

    AS WE HAVE STATED BEFORE, THE PARTNERSHIP HAS DETERMINED TO BEGIN
    AN ORDERLY LIQUIDATION OF ALL THE PARTNERSHIP'S ASSETS.  Although
    there can be no assurance as to the timing of any liquidation, it
    is anticipated that such liquidation would result in distributions
    to all Unitholders of the cash proceeds from the sale of the
    Partnership's properties as they are sold and the dissolution of
    the Partnership followed by a liquidating distribution to all
    Unitholders before December 1999.  THE PARTNERSHIP'S LIQUIDATION
    PLAN IS ONE OF THE MAJOR REASONS THAT THE UNITS ARE AN ATTRACTIVE
    INVESTMENT FOR MR. ICAHN -- IT GIVES HIM THE ABILITY TO MAKE - IN
    HIS OWN WORDS -- A "GOOD RETURN" ON HIS MONEY FROM PURCHASING YOUR
    UNITS.

    ON OCTOBER 17, 1996, THE PARTNERSHIP ANNOUNCED THAT IT HAD RECEIVED
    AN UNSOLICITED OFFER FROM AN UNAFFILIATED THIRD PARTY TO ACQUIRE
    ALL OUTSTANDING UNITS OF THE PARTNERSHIP AT $6.50 PER UNIT, WHICH
    IS 15% MORE THAN MR. ICAHN IS OFFERING FOR SUCH UNITS.  After
    meeting with the offeror in Dallas and considering the $6.50 offer,
    the Partnership rejected it as being inadequate because the Present
    Estimated Liquidation Value of the Partnership's Units is between
    $8.37 and $8.64 per Unit.

    UNITHOLDERS OF MCNEIL REAL ESTATE FUND V, LTD. WHO DID NOT TENDER
    THEIR UNITS TO MR. ICAHN ARE EXPECTED TO RECEIVE APPROXIMATELY 82%
    MORE THAN HIS 1995 OFFER PRICE FOR THEIR UNITS.  Last August, Mr.
    Icahn offered $400 per unit for McNeil Real Estate Fund V, Ltd. 

    Since then, Fund V distributed $83.40 cash to unitholders and, on
    September 10, 1996, holders of Fund V's units approved the
    liquidation and dissolution of Fund V, pursuant to which it is
    anticipated that all unitholders will receive a cash distribution
    of approximately $643.07 per Unit, subject to reserves and
    adjustment.  Although there can be no assurance that a similar
    result will occur with the Partnership or that any particular
    distribution per Unit will be obtained, THE LIQUIDATION AND
    DISSOLUTION OF FUND V PROVIDES SOLID SUPPORT FOR OUR VIEW THAT MR.
    ICAHN'S CURRENT OFFER PRICE FOR YOUR UNITS IS INADEQUATE AND NOT IN
    THE BEST INTERESTS OF EITHER THE PARTNERSHIP OR UNITHOLDERS AND WE
    STRONGLY RECOMMEND THAT YOU REJECT IT. 

    IN THE EVENT YOU HAVE ANY QUESTIONS, PLEASE CONTACT THE HERMAN
    GROUP, INC. AT (800) 658-2007.

    Very truly yours,

    Donald K. Reed
    McNeil Partners, L.P.
    General Partner

     P.S.      If you are one of the few who tendered your Units
               and have second thoughts about your decision, we
               have included a withdrawal form for your
               convenience.