SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549

                                  Schedule TO/A

               Tender Offer Statement Pursuant to Section 14(d)(1)
                     of the Securities Exchange Act of 1934

                                 Amendment No. 1

                            (Name of Subject Company)

                    Winthrop Partners 80 Limited Partnership

                       A Massachusetts limited partnership

                              at $125 Net Per Unit

                                       by

               Equity Resource Lexington Fund Limited Partnership,
                       a Massachusetts limited partnership

                          Equity Resources Group, Inc.
                               Eggert Dagbjartsson

                            Limited Partnership Units

                  Eggert Dagbjartsson, Executive Vice President
                          Equity Resources Group, Inc.
                                44 Brattle Street
                               Cambridge, MA 02138
                                 (617) 876-4800


                            Calculation of Filing Fee

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          Transaction Valuation*                         Amount of Filing Fee
                $1,141,250                                      $228.25
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*        For purposes of calculating the filing fee only. This calculation
         assumes the purchase of 9,130 Units at a purchase price of $125 per
         Unit in the Partnership.

[_]      Check box if any part of the fee is offset as provided by Rule
         0-11(a)(2) and identify the filing with which the offsetting fee was
         previously paid. Identify the previous filing by registration statement
         number, or the Form or Schedule and the date of its filing.
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        Amount Previously Paid:   $228.25        Filing Party: Equity Resource
                                                               Lexington Fund LP

        Form of Registration No.: Schedule TO/T  Date Filed:   April 19, 2002

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================================================================================



                                 AMENDMENT NO. 1

         This Amendment No. 1 amends and supplements the Tender Offer Statement
on Schedule TO originally filed with the Securities and Exchange Commission on
April 19, 2002 (the "Schedule TO") by Equity Resources Lexington Fund Limited
Partnership, a Massachusetts limited partnership, Equity Resources Group, Inc.,
a Massachusetts corporation, and Eggert Dagbjartsson, an individual (together,
the "Purchaser") to purchase 9,130 units (the "Units") of limited partnership
interests in Winthrop Partners 80 Limited Partnership, a Massachusetts limited
partnership (the "Partnership"), at $125 for each Unit, net to the seller in
cash, without interest, less the amount of any distributions declared or paid
from any source by the Partnership with respect to the Units after April 19,
2002 (without regard to the record date), upon the terms and subject to the
conditions set forth in this Offer to Purchase (the "Offer to Purchase") and in
the Agreement of Sale, as each may be supplemented or amended from time to time
(which together constitute the "Offer"). The information contained in the Offer
to Purchase is incorporated herein by reference. Capitalized terms used and not
defined herein shall have the meanings ascribed to such terms in the Offer to
Purchase.

         Item 1--Summary Term Sheet

                  The seventh question of the Summary Term Sheet is amended in
         its entirety to read as follows:

                  "Do you have the financial resources to make payment and is
                  your financial condition relevant to my decision to tender in
                  the offer?

                  The Purchaser expects that approximately $1,141,250 (exclusive
                  of fees and expenses) will be required to purchase 9,130
                  Units, if tendered. The Purchaser will obtain those funds from
                  capital contributions from its members, which have an
                  aggregate net worth substantially in excess of the amount
                  required to purchase the 9,130 Units. The Purchaser is not a
                  public company and has not prepared audited financial
                  statements. We do not think our financial condition is
                  relevant to your decision whether to tender in the offer
                  because the form of payment is cash, and we currently have
                  sufficient cash and cash equivalents relative to the
                  consideration to be paid in the offer. Additionally, the offer
                  is not subject to any financing condition. Limited Partners
                  should note that the Purchaser is currently offering to
                  purchase interests in other partnerships. These concurrent
                  offers will not impact the Purchaser's ability to purchase
                  Units tendered under this Offer. See "THE OFFER--Section
                  13--Source and Amount of Funds.""

                  The thirteenth question of the Summary Term Sheet is amended
         in its entirety to read as follows:

                  "Will there be any change to the Partnership or my Units if I
                  decide not to tender my Units?

                  It is expected that following the offer, the business and
                  operations of the Partnership will be continued substantially
                  as they are currently being conducted today. We are acquiring
                  the Units for investment purposes only, not with a view toward
                  affecting management of the Partnership. You should note,
                  however, that if we purchase an additional 9,130 Units, the
                  Lexington Fund and affiliated funds controlled by Equity
                  Resources Group will own 20.45% of the outstanding



                  Units. Although this would not represent a majority interest,
                  this increase in ownership would give us and our affiliates
                  increased control over any vote of the limited partners. See
                  "THE OFFER--Section 8--Future Plans" and "THE OFFER--Section
                  14--Voting Power.""

         Item 4--Terms of the Transaction The

         Offer

                  Section 2 "Proration; Acceptance for Payment and Payment for
         Units" is amended in its entirety to read as follows:

                  "If fewer than 9,130 Units are validly tendered and not
                  properly withdrawn prior to the Expiration Date, the
                  Purchaser, upon the terms and subject to the conditions of the
                  Offer, will accept for payment all of those Units so tendered.

                  If more than 9,130 Units are validly tendered and not properly
                  withdrawn on or prior to the Expiration Date, the Purchaser,
                  upon the terms and subject to the conditions of the Offer,
                  will accept for payment 9,130 Units so tendered, on a pro rata
                  basis, with appropriate adjustments to avoid tenders of
                  fractional Units.

                  In the event that proration is required, the Purchaser will
                  determine the precise number of Units to be accepted and will
                  announce the final results of proration as soon as
                  practicable. A letter announcing the final results of
                  proration will be mailed to all tendering limited partners and
                  a press release announcing the final results of proration will
                  be released. The Purchaser will not pay for any Units tendered
                  until after the final results of proration have been
                  determined.

                  If, prior to the Expiration Date, the Purchaser increases the
                  Offer Price, the increased Offer Price will be paid for all
                  Units accepted for payment pursuant to the Offer, whether or
                  not those Units were tendered prior to such increase."

                  The third paragraph of Section 3 "Procedures for Tendering
         Units" is amended in its entirety to read as follows:

                  "Backup Federal Income Tax Withholding. A tendering Limited
                  Partner must verify that Limited Partner's correct taxpayer
                  identification number or social security number, as
                  applicable, and make certain warranties and representations
                  that it is not subject to backup federal income tax
                  withholding as set forth in the Agreement of Sale. Any Limited
                  Partner wishing to tender Units under the Offer who is subject
                  to backup withholding, including nonresident aliens and
                  foreign corporations, should contact the Purchaser's
                  information agent for information regarding the tender
                  procedure for limited partners subject to backup withholding."

                  The first paragraph of Section 4 "Withdrawal Rights" is
         amended in its entirety to read as follows:



                  "Except as otherwise provided in this Section 4, tenders of
                  Units made pursuant to the Offer are irrevocable. Units
                  tendered pursuant to the Offer may be withdrawn at any time
                  prior to the Expiration Date. In the event that the Offer is
                  extended beyond the Expiration Date, the Units tendered may be
                  withdrawn at any time prior to the end of the extension
                  period. In addition, limited partners have a right to withdraw
                  tendered shares at any time after the expiration of the offer
                  until we accept Units for payment. Tendering limited partners
                  will additionally have withdrawal rights as provided under
                  Exchange Act 14(d)(5)."

                  The second paragraph of Section 4 "Extension of Tender Period;
         Termination; Amendment" is amended in its entirety to read as follows:

                  "Any extension, or amendment will be followed as promptly as
                  practicable by a mailing notifying each Limited Partner, the
                  mailing in the case of an extension to be issued no later than
                  9:00 a.m., Eastern Time, on the next business day after the
                  previously scheduled Expiration Date, in accordance with Rule
                  14e-1(d) under the Exchange Act. Any extension or amendment
                  will be announced by press release on the date of the
                  amendment or extension in accordance with Rule 14e-1(d). Any
                  mailing or press release announcing an amendment or extension
                  will include the approximate number of Units tendered at the
                  time of the extension or amendment."

                  The third paragraph of Section 7 "Purpose and Effects of the
         Offer" is amended in its entirety to read as follows:

                  "Though there have been changes in the Partnership since the
                  GP Valuation, the Purchaser believes that the net effect of
                  those changes is not material. A portion of the cash used in
                  the GP Valuation has been distributed to limited partners,
                  decreasing the value of the Partnership. This decrease in
                  value has been offset by the fact that the Partnership's
                  Victoria, TX property is now fully leased and by the fact that
                  the percentage rents collected at the Partnership's Nebraska
                  City, NE and Livingston, TX properties have increased. In
                  determining the fair market value of Units, the Purchaser
                  discounted the GP Valuation 30% based on the long-term
                  illiquid nature of the Units, the Unitholders' lack of control
                  over the Partnership's operations and the uncertainty
                  concerning the Partnership's future operations. With this
                  discount, the Purchaser arrived at a fair market value of
                  $126.70 per Unit. Applying an illiquidity discount is standard
                  for real estate limited partnerships. According to the
                  January/February 2002 Partnership Spectrum, the average annual
                  discounts applied to the purchase of minority interests in
                  publicly-registered real estate limited partnerships since
                  1992 have ranged from 25% to 44%."

                  Section 14 "Voting Power" is amended in its entirety to read
         as follows:

                  "Though the Lexington Fund currently owns no units in the
                  Partnership, funds controlled by Equity Resources Group
                  currently own 206 Units, representing 0.45% of the
                  Partnership's outstanding Units. If the Purchaser purchases an
                  additional 9,130 Units, the Lexington Fund and the funds
                  controlled by Equity Resources Group will own 20.45% of the
                  Partnership's outstanding Units.



                  Although this would not represent a majority interest, this
                  increase in ownership would give the Lexington Fund and the
                  funds controlled by Equity Resources Group increased control
                  over any vote of the Limited Partners."

                  Section 15 "Certain Conditions of the Offer" is amended to
         include the following:

                  "The Purchaser confirms that it has disclosed all conditions
                  of the Offer and that all conditions of the Offer must be
                  satisfied prior to the expiration of the Offer."

         Item 5-- Past Contacts, Transactions, Negotiations and Agreements

                  Section 9--"Past Contact and Negotiations with General
         Partner" is amended in its entirety to read as follows:

                  "Since 1983, and continuing until the date of this Offer,
                  various affiliates of the Purchaser have engaged in ongoing
                  conversations and exchanges of correspondence with various
                  affiliates of the Partnership and affiliates of the general
                  partner of the Partnership with regard to these affiliates'
                  ownership of Units and other partnership interests in which
                  the general partner of the Partnership is affiliated. These
                  conversations have principally involved requests to obtain the
                  list of Limited Partners and other information concerning the
                  Partnership. In 2000, as a result of these conversations, an
                  affiliate of the Purchaser entered into an agreement with
                  Winthrop Financial Associates, a Maryland limited partnership.
                  Winthrop Financial Associates is the manger of the general
                  partners of the Partnership. One part of this agreement gives
                  Winthrop Financial Associates the option to acquire up to 50%
                  of all units which the Purchaser acquires in certain
                  partnerships, including this Partnership, on the same terms as
                  the Purchaser. In the past, Winthrop Financial Associates has
                  exercised this option with regard to some offers made by the
                  Purchaser for units in other partnerships and has declined to
                  exercise this option with regard to other offers made by the
                  Purchaser for units in other partnerships. In its response to
                  the Purchaser's Offer, Winthrop Financial Associates has
                  indicated that it will exercise its right to acquire 50% of
                  the Units tendered as a result of the Offer.

                  Neither the Partnership, the General Partner or any of their
                  affiliates have disclosed to the Purchaser or disclosed in any
                  filings made by the Partnership with the SEC, any plans or
                  intentions to liquidate the Partnership."

         Item 7--Source and Amount of Funds or Other Consideration

                  Section 13--"Source and Amount of Funds" is amended in its
         entirety to read as follows:

                  "The Purchaser expects that approximately $1,100,000
                  (exclusive of fees and expenses) will be required to purchase
                  9,130 Units, if tendered. The Purchaser will either use cash
                  on hand or will obtain those funds from capital contributions
                  from its members, each of whom have an aggregate net worth
                  substantially in excess of the amount required to be
                  contributed to the Purchaser to purchase the 9,130 Units. The
                  Purchaser is not a public company and has not prepared



                  audited financial statements. The Purchaser and its members
                  have adequate cash and cash equivalents to fund payment to
                  selling limited partners. As of April 22, 2002, the Purchaser
                  had over $700,000 in cash on hand and total assets in excess
                  of $5,000,000. The members of the Partnership have informed
                  the Partnership that they will contribute any amount required
                  to purchase the 9,130 Units. No third-party financing is
                  required in connection with the Offer. The Purchaser
                  represents to all tendering Limited Partners that the
                  Purchaser has the financial wherewithal to accept for payment
                  and thereby purchase all 9,130 Units which the Purchaser has
                  offered to purchase in this Offer to Purchase. No alternative
                  financing plan exists."

         Item 11--Additional Information

         Item 11 is hereby amended to add the following:

                  "The information set forth in the agreement of sale and
                  assignment attached hereto as Exhibit (a)(5). The agreement
                  between the Purchaser and the general partner discussed in
                  "THE OFFER--Section 9--"Past Contact and Negotiations with
                  General Partner" attached hereto as Exhibit (d)."

         Item 12--Exhibits

                  Item 12 is hereby amended by adding the following exhibits,
                  each of which is attached:

                  (a)(5) Agreement of Sale and Assignment.

                  (d)    Agreement between Purchaser and General Partner



                                   SIGNATURES


            After due inquiry and to the best of my knowledge and belief, I
certify that the information set forth in this statement is true, complete and
correct.

Dated:      May 2, 2002      Equity Resource Lexington Fund Limited Partnership,
                                       a Massachusetts limited partnership

                                       By:  /s/    Eggert Dagbjartsson
                                            --------------------------------
                                                   Eggert Dagbjartsson
                                                   General Partner

                                       Equity Resources Group, Inc.
                                       A Massachusetts Corporation

                                       By:  /s/    Eggert Dagbjartsson
                                            --------------------------------
                                                   Eggert Dagbjartsson
                                                   Executive Vice President

                                       Eggert Dagbjartsson

                                       By:  /s/    Eggert Dagbjartsson
                                            --------------------------------
                                                   Eggert Dagbjartsson
                                                   Eggert Dagbjartsson



                                  EXHIBIT INDEX


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Exhibit No.                            Description
- -----------                            ------------
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(a)(1) -               Offer to Purchase, dated April 19, 2002*
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(a)(2) -               Transmittal letter, dated April 19, 2002*
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(a)(3) -               Agreement of Sale*
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(a)(4)                 Summary Advertisement*
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(a)(5)--               Agreement of Sale and Assignment
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(a)(6)--               Not applicable.
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(a)(7)--               Not applicable.
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(a)(8)--               Not applicable.
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(b) -                  Not applicable.
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(c) -                  Not applicable.
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(d) -                  Agreement between Purchaser and General Partner.
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(e) -                  Not applicable.
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(f) -                  Not applicable.
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(g)                    Not applicable
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(h)                    Not applicable.
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* Previously filed