QUALIFIED UNT INVT LIQUID TR SER \QUILTS\ QUILTS US INCOME U
497, 1996-07-25
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                                                     Rule 497(b)
                                                     Registration No. 333-08275

                                   ("QUILTS")
                 QUALIFIED UNIT INVESTMENT LIQUID TRUST SERIES
                            A Unit Investment Trust


                     QUILTS Income--U.S. Treasury Series 19
                     QUILTS Income--U.S. Treasury Series 20
                 QUILTS Asset Builder--U.S. Treasury Series 21



      QUILTS consists of three separate unit investment trusts designated
QUILTS Income--U.S.  Treasury Series 19, QUILTS Income--U.S. Treasury Series 20
and QUILTS Asset Builder--U.S. Treasury Series 21 (collectively, the "Trusts").
The Sponsor of the Trusts is OCC Distributors (the "Sponsor"). The objective of
the Trusts is to provide  safety of  principal.  QUILTS  Income--U.S.  Treasury
Series 19 seeks to provide current quarterly distributions of income and QUILTS
Income--U.S.  Treasury Series 20 seeks to provide current monthly distributions
of income. With respect to QUILTS Asset  Builder--U.S.  Treasury Series 21, the
Trust  seeks to  accumulate  principal  value in the Units over the life of the
Trust. Each Trust seeks to achieve these objectives by investing in a portfolio
of U.S. Treasury Obligations (the "Treasury Securities") that are backed by the
full faith and credit of the United States Government (the Treasury  Securities
are  sometimes  collectively  referred to as the  "Securities").  Each Trust is
designed to have regularly scheduled payments of principal during its life from
a portfolio of Securities with laddered  maturities.  The value of the Units of
the Trusts will  fluctuate  with  fluctuations  in the value of the  underlying
Securities in the  portfolios of each Trust.  Therefore,  Unit Holders who sell
their Units prior to  termination  of the Trusts may receive  more or less than
their original  purchase price upon sale. Units of the Trusts may be suited for
purchase  by IRAs,  self-employed  retirement  plans  (formerly  Keogh  Plans),
pension,   profit-sharing  and  other  qualified  retirement  plans.  Investors
considering  participation in any such plan should review specific tax laws and
pending  legislation  related thereto and should consult their attorneys or tax
advisers with respect to the  establishment  and  maintenance of any such plan.
(See  "Retirement  Plans" and "Tax Status" in Part B of this  Prospectus.)  The
minimum  purchase is 1,000 Units for  individual  purchases,  and 250 Units for
purchases by Individual  Retirement  Accounts,  self-employed  retirement plans
(formerly Keogh Plans), pension funds and other tax-deferred retirement plans.

           These Trusts may be particularly  appropriate for foreign  investors
as the income from the Trusts,  provided  certain  conditions  are met, will be
exempt  from  withholding  for U.S.  Federal  income  tax  purposes.  A foreign
investor must provide a completed W-8 Form to his financial  representative  or
the  Trustee  to avoid  withholding  on his  account.  The  Trusts  may also be
appropriate  for investors who desire to  participate in a portfolio of taxable
fixed  income  securities  offering  the  safety of  principal  provided  by an
investment  backed  by the full  faith  and  credit of the  United  States.  In
addition,  many  investors may benefit from the exemption  from state and local
personal income taxes that will pass through the Trusts to Unit Holders.
           This Prospectus  consists of two parts. Part A contains a Summary of
Essential Information for each Trust including descriptive material relating to
each Trust, the Statement of Condition of the Trusts and the Portfolios of each
Trust. Part B contains general  information about the Trusts. Part A may not be
distributed unless accompanied by Part B.
           QUILTS are not a deposit or other obligation of, or guaranteed by, a
depository  institution.  QUILTS are not insured by the FDIC and are subject to
investment risks, including possible loss of the principal amount invested.



    THESE SECURITIES HAVE NOT BEEN APPROVED OR DISAPPROVED BY THE SECURITIES
         AND EXCHANGE COMMISSION OR ANY STATE SECURITIES COMMISSION NOR
             HAS THE COMMISSION OR ANY STATE SECURITIES CORPORATION
                  PASSED UPON THE ACCURACY OR ADEQUACY OF THIS
                     PROSPECTUS. ANY REPRESENTATION TO THE
                        CONTRARY IS A CRIMINAL OFFENSE.


                            PROSPECTUS PART A DATED
                   JULY 24, 1996 Please read and retain both
                      parts of this Prospectus for future
                                   reference.


                                    387312.1

<PAGE>




                                 QUILTS Income
                            U.S. Treasury Series 19


   SUMMARY OF ESSENTIAL INFORMATION AS OF JULY 23, 1996 (The initial Date of
Deposit  which is the date on which  the Trust  Agreement  was  signed  and the
deposit of Securities with the Trustee was made.)

<TABLE>

<S>                                                               <C> 
CUSIP#:  747938132                                                Evaluation Time:  12:00 Noon New York Time on
Sponsor: OCC Distributors                                             the initial Date of Deposit and 4:00 P.M. thereafter.
Date of Deposit: July 23, 1996                                    Minimum Purchase: 1,000  Units
Aggregate Principal Amount                                        Minimum Principal Distribution:  $1.00 per 1,000
    of Securities:...................................$ 250,000        Units.
Number of Units: (The number of Units will be                     Weighted Average Maturity of Securities in the Portfolio:
    increased as the Sponsor deposits additional                      2 Years
    Securities into the Trust.)........................250,000    Minimum Value of Trust: The Trust may be
Fractional Undivided Interest in Trust                                terminated if the value of the Securities in the Trust is less
    per 1,000 Units:.....................................1/250        than 40% of the original aggregate principal amount of
Public Offering Price:                                                Securities in the Trust.
    Aggregate Offering Price of Securities                        Mandatory Termination Date:  The earlier of January 31, 2000
        in Trust.....................................$ 245,242        or the disposition of the last Security in the Trust.
    Divided By 250,000 Units multiplied by 1,000......$ 980.97    Trustee and Evaluator:  The Chase Manhattan Bank.
    Plus Sales Charge of 1.70% of Public Offering                 Trustee's Annual Fee and Estimated Expenses:
        Price..........................................$ 16.96        $1.00 per 1,000 Units.
    Public Offering Price per 1,000 Units(1)..........$ 997.93    Annual Supervisory Fee (Payable to an affiliate of the Sponsor):
    Redemption Price per 1,000 Units..................$ 980.34        Maximum of $.10 per $1,000 principal amount of
    Sponsor's Initial Repurchase Price                                Securities (see "Trust Expenses and Charges" in Part B).
        per 1,000 Units:..............................$ 980.97
Excess of Public Offering Price Over
    Redemption Price per 1,000 Units:..................$ 17.59
Excess of Sponsor's Initial Repurchase Price
    Over Redemption Price per 1,000 Units:...............$ .63
</TABLE>



                          INFORMATION PER 1,000 UNITS
                       BASED UPON QUARTERLY DISTRIBUTIONS

<TABLE>

<S>                                                                                                                      <C>   
Gross annual interest income (cash)..................................................................................... $53.00
Less organizational expenses(4).........................................................................................    .20
Less estimated annual fees and expenses(5)..............................................................................   1.10
                                                                                                                          -----

Estimated net annual interest income (cash)(2)..........................................................................  51.70
Estimated daily interest accrual (Does not include income accrual from original issue
     discount bonds.)...................................................................................................   .144
Estimated current return based on Public Offering Price (Does not include income accrual
     from original issue discount bonds.  The estimated current return is increased for transactions
     entitled to a discount.)(5)........................................................................................  5.18%
Estimated long term return (Does not include income accrual from original issue discount bonds.
     The estimated long-term return is increased for transactions entitled to a discount.)(3)(5)........................  5.29%
First record date..............................................................................................October 15, 1996
First interest payment date....................................................................................October 31, 1996
Subsequent record dates.............................................................15th day of the first month of each quarter
Subsequent interest payment dates...................................................Last day of the first month of each quarter
</TABLE>



(1)  No accrued  interest will be added for any person  contracting to purchase
     Units on the date of this  Prospectus.  Anyone  ordering  Units after such
     Date  will pay  accrued  interest  from  July 29,  1996 to the date of the
     settlement  (three  business  days after  order)  (the  "First  Settlement
     Date"),  less  distributions  from the Interest Account subsequent to July
     29, 1996.

(2)  The first  interest  distribution  of $10.91 per 1,000 Units for  Treasury
     Income  Series 19 will be made on October  31,  1996 (the  "First  Payment
     Date") to all Unit  Holders  of record on  October  15,  1996 (the  "First
     Record  Date").  The first  regular  quarterly  payment per 1,000 Units of
     Treasury  Income  Series 19 will be  $12.92 on  January  31,  1997.  For a
     schedule of the regular quarterly  payments (the "Quarterly Payment Date")
     see "Estimated Cash Flows to Unit Holders."


                                      A-2
 387312.1

<PAGE>



(3)  Estimated  long term return is  calculated  by each Trust by computing the
     average of the yields to maturity (or earlier call date) of the Securities
     in the  portfolio  of the  Trust in  accordance  with  accepted  practices
     (taking into account the amortization of premiums, accretion of discounts,
     market value,  and estimated  retirement of each Security) and subtracting
     from the average yield so calculated  the fees,  expenses and sales charge
     of each Trust.  Estimated  current  return is  calculated  by dividing the
     estimated  net annual  interest  income by the Public  Offering  Price per
     Unit. In contrast to the estimated long term return, the estimated current
     return does not take into account the amortization of premium or accretion
     of discount on the  underlying  Securities,  if any.  These returns do not
     include  the  effects  of any  delay in  payments  to Unit  Holders  and a
     calculation  which includes  those effects would be lower.  See "Estimated
     Long Term Return and Estimated Current Return" in Part B.


(4)  Although  historically  the sponsors of unit investment  trusts  ("UITs")"
     have paid all of the costs of establishing UITs, this Trust (and therefore
     the Unit Holders) will bear all or a portion of its  organizational  costs
     up to a maximum of $.20 per  $1,000  Units per annum for  Treasury  Income
     Series 19. Such  organizational  costs include:  the cost of preparing and
     printing the registration statement, the trust indenture and other closing
     documents;  and the  initial  audit  of the  Trust.  Total  organizational
     expenses will be amortized over the life of the Trust for Treasury  Income
     Series 19. See "Trust Expenses and Changes" in Part B.


(5)  Assumes the Trust will reach a size of  10,000,000  Units as  estimated by
     the  Sponsor;  expenses  per Unit will vary  with the  actual  size of the
     Trust. If the Trust does not reach this Unit level,  the Estimated  Annual
     Fees and Expenses per Unit, the Estimated Current Return and the Estimated
     Long Term Return will be adversely affected.


                                      A-3
 387312.1

<PAGE>




                                 QUILTS Income
                            U.S. Treasury Series 20


   SUMMARY OF ESSENTIAL INFORMATION AS OF JULY 23, 1996 (The initial Date of
Deposit  which is the date on which  the Trust  Agreement  was  signed  and the
deposit of Securities with the Trustee was made.)

<TABLE>

<S>                                                                    <C>
CUSIP#:  747938140                                                     Evaluation Time:  12:00 Noon New York Time on
Sponsor: OCC Distributors                                                  the initial Date of Deposit and 4:00 P.M. thereafter.
Date of Deposit: July 23, 1996                                         Minimum Purchase: 1,000 Units
Aggregate Principal Amount                                             Minimum Principal Distribution:  $1.00 per 1,000
    of Securities:.........................................$ 250,000       Units.
Number of Units: (The number of Units will be                          Weighted Average Maturity of Securities in the
    increased as the Sponsor deposits additional                           Portfolio: 3.37 Years
    Securities into the Trust.)..............................250,000   Minimum Value of Trust: The Trust may be
Fractional Undivided Interest in Trust                                     terminated if the value of the Securities in the Trust is
    per 1,000 Units:...........................................1/250       less than 40% of the original aggregate principal
Public Offering Price:                                                     amount of Securities in the Trust.
    Aggregate Offering Price of Securities                             Mandatory Termination Date:  The earlier of
        in Trust............................................$247,008       June 30, 2002, or the disposition of the last
    Divided By 250,000 Units multiplied by 1,000.............$988.03       Security in the Trust.
    Plus Sales Charge of 1.80% of Public Offering                      Trustee and Evaluator:  The Chase Manhattan Bank.
        Price.................................................$18.11   Trustee's Annual Fee and Estimated Expenses:
    Public Offering Price per 1,000 Units(1)...............$1,006.14       $1.25 per 1,000 Units.
    Redemption Price per 1,000 Units.........................$987.47   Annual Supervisory Fee (Payable to an affiliate of the
    Sponsor's Initial Repurchase Price                                 Sponsor): Maximum of $.10 per $1,000
        per 1,000 Units:.....................................$988.03       principal amount of Securities (see "Trust Expenses
Excess of Public Offering Price Over                                       and Charges" in Part B).
    Redemption Price per 1,000 Units:.........................$18.67
Excess of Sponsor's Initial Repurchase Price
    Over Redemption Price per 1,000 Units:......................$.56

</TABLE>


                          INFORMATION PER 1,000 UNITS
                        BASED UPON MONTHLY DISTRIBUTIONS

<TABLE>

<S>                                                                                                                <C>   
Gross annual interest income (cash).........................................................................       $60.50
Less organizational expenses(4).............................................................................          .20
Less estimated annual fees and expenses(5)..................................................................         1.35
                                                                                                                   ------

Estimated net annual interest income (cash)(2)..............................................................        58.95
Estimated daily interest accrual (Does not include income accrual from original issue
     discount bonds.).......................................................................................         .164
Estimated current return based on Public Offering Price (Does not include income accrual
     from original issue discount bonds.  The estimated current return is increased for transactions
     entitled to a discount.)(5)............................................................................        5.86%
Estimated long term return (Does not include income accrual from original issue discount bonds.
     The estimated long-term return is increased for transactions entitled to a discount.)(3)(5)............        5.81%
First record date...........................................................................................      August 15, 1996
First interest payment date.................................................................................      August 31, 1996
Subsequent record dates.....................................................................................15th day of each month
Subsequent interest payment dates...........................................................................Last day of each month

</TABLE>


(1)  No accrued  interest will be added for any person  contracting to purchase
     Units on the date of this  Prospectus.  Anyone  ordering  Units after such
     Date  will pay  accrued  interest  from  July 29,  1996 to the date of the
     settlement  (three  business  days after  order)  (the  "First  Settlement
     Date"),  less  distributions  from the Interest Account subsequent to July
     29, 1996.

(2)  The first  interest  distribution  of $2.62 per 1,000  Units for  Treasury
     Income  Series 20 will be made on August  31,  1996  (the  "First  Payment
     Date") to all Unit Holders of record on August 15, 1996 (the "First Record
     Date").  The first  regular  monthly  payment  per 1,000 Units of Treasury
     Income

                                      A-4
 387312.1

<PAGE>




     Series 20 will be $4.91 on  September  30,  1996.  For a  schedule  of the
     regular monthly  payments (the "Monthly Payment Date") see "Estimated Cash
     Flows to Unit Holders."


(3)  Estimated  long term return is  calculated  by each Trust by computing the
     average of the yields to maturity (or earlier call date) of the Securities
     in the  portfolio  of the  Trust in  accordance  with  accepted  practices
     (taking into account the amortization of premiums, accretion of discounts,
     market value,  and estimated  retirement of each Security) and subtracting
     from the average yield so calculated  the fees,  expenses and sales charge
     of each Trust.  Estimated  current  return is  calculated  by dividing the
     estimated  net annual  interest  income by the Public  Offering  Price per
     Unit. In contrast to the estimated long term return, the estimated current
     return does not take into account the amortization of premium or accretion
     of discount on the  underlying  Securities,  if any.  These returns do not
     include  the  effects  of any  delay in  payments  to Unit  Holders  and a
     calculation  which includes  those effects would be lower.  See "Estimated
     Long Term Return and Estimated Current Return" in Part B.


(4)  Although  historically  the sponsors of unit investment  trusts  ("UITs")"
     have paid all of the costs of establishing UITs, this Trust (and therefore
     the Unit Holders) will bear all or a portion of its  organizational  costs
     up to a maximum of $.20 per  $1,000  Units per annum for  Treasury  Income
     Series 20. Such  organizational  costs include:  the cost of preparing and
     printing the registration statement, the trust indenture and other closing
     documents;  and the  initial  audit  of the  Trust.  Total  organizational
     expenses will be amortized over the life of the Trust for Treasury  Income
     Series 20. See "Trust Expenses and Changes" in Part B.


(5)  Assumes the Trust will reach a size of  10,000,000  Units as  estimated by
     the  Sponsor;  expenses  per Unit will vary  with the  actual  size of the
     Trust. If the Trust does not reach this Unit level,  the Estimated  Annual
     Fees and Expenses per Unit, the Estimated Current Return and the Estimated
     Long Term Return will be adversely affected.



                                      A-5
 387312.1

<PAGE>




                              QUILTS Asset Builder
                            U.S. Treasury Series 21


   SUMMARY OF ESSENTIAL INFORMATION AS OF JULY 23, 1996 (The initial Date of
Deposit  which is the date on which  the Trust  Agreement  was  signed  and the
deposit of Securities with the Trustee was made.)

<TABLE>

<S>                                                           <C> 
CUSIP#:  747938157                                            Evaluation Time:  12:00 Noon New York Time on
Sponsor: OCC Distributors                                       the initial Date of Deposit and 4:00 P.M. thereafter.
Date of Deposit: July 23, 1996                                Minimum Purchase: 1,000 Units
Aggregate Principal Amount                                    Minimum Principal Distribution:  $1.00 per 1,000
    of Securities:................................$ 250,000     Units.
Number of Units: (The number of Units will be                 Weighted Average Maturity of Securities in the Portfolio:
    increased as the Sponsor deposits additional                2.92 Years
    Securities into the Trust.).....................250,000   Minimum Value of Trust: The Trust may be
Fractional Undivided Interest in Trust                          terminated if the value of the Securities in the Trust is less than
    per 1,000 Units:..................................1/250     40% of the original aggregate principal amount of Securities in
Public Offering Price:                                          the Trust.
    Aggregate Offering Price of Securities                    Mandatory Termination Date:  The earlier of August 15, 2002,
        in Trust...................................$207,637     or the disposition of the last Security in the Trust.
    Divided By 250,000 Units multiplied by 1,000....$830.55   Trustee and Evaluator:  The Chase Manhattan Bank.
    Plus Sales Charge of 1.80% of Public Offering             Trustee's Annual Fee and Estimated Expenses:
        Price........................................$15.22     $ .55 per 1,000 Units.
    Public Offering Price per 1,000 Units(1)........$845.77   Annual Supervisory Fee (Payable to an affiliate of the Sponsor):
    Redemption Price per 1,000 Units................$830.08     Maximum of $.10 per $1,000 principal amount of Securities
    Sponsor's Initial Repurchase Price                          (see "Trust Expenses and Charges" in Part B).
        per 1,000 Units:............................$830.55
Excess of Public Offering Price Over
    Redemption Price per 1,000 Units:................$15.69
Excess of Sponsor's Initial Repurchase Price
    Over Redemption Price per 1,000 Units:.............$.47

</TABLE>

                          INFORMATION PER 1,000 UNITS

<TABLE>

<S>                                                                                                                      <C> 
Gross annual interest income (cash) (Does not include income accrued from original issue discount bonds.)............... $.95
Less organization expenses(3)...........................................................................................  .20
Less estimated annual fees and expenses (The Trustee will retain excess interest income in the Trust to pay
     future expenses.)(4)...............................................................................................  .65
                                                                                                                          ---

Estimated net annual  interest  income (cash) (Does not include  income accrual
from original issue discount
     bonds.)............................................................................................................   10
Estimated long term return (Does not include income accrual from original issue discount bonds.
     The estimated long term return is increased for transactions entitled to a discount.)(2)(4)........................ 5.76%

</TABLE>


(1)  No accrued  interest will be added for any person  contracting to purchase
     Units on the date of this  Prospectus.  Anyone  ordering  Units after such
     Date  will  pay  accrued  interest  from  July  29,  1996  to the  date of
     settlement  (three  business  days after  order)  (the  "First  Settlement
     Date"),  less  distributions  from the Interest Account subsequent to July
     29, 1996.

(2)  Estimated  long term return is  calculated  by each Trust by computing the
     average of the yields to maturity (or earlier call date) of the Securities
     in the  portfolio  of the  Trust in  accordance  with  accepted  practices
     (taking into account the amortization of premiums, accretion of discounts,
     market value,  and estimated  retirement of each Security) and subtracting
     from the average yield so calculated  the fees,  expenses and sales charge
     of each  Trust.  This  return does not include the effects of any delay in
     payments to Unit Holders and a calculation  which  includes  those effects
     would be lower.  See  "Estimated  Long Term Return and  Estimated  Current
     Return" in Part B.


(3)  Although historically the sponsors of unit investment trusts ("UITs") have
     paid all of the costs of establishing  UITs, this Trust (and therefore the
     Unit Holders) will bear all or a portion of its organizational costs up to
     a maximum of $.20 per 1,000 Units per annum for Asset  Builder  Series 21.
     Such organizational  costs include: the cost of preparing and printing the
     registration  statement,  the trust indenture and other closing documents;
     and the initial audit of the Trust. Total organizational  expenses will be
     amortized  over the life of Asset Builder  Series 21. See "Trust  Expenses
     and Changes" in Part B.


(4)  Assumes the Trust will reach a size of  10,000,000  Units as  estimated by
     the  Sponsor;  expenses  per Unit will vary  with the  actual  size of the
     Trust. If the Trust does not reach this Unit level,  the Estimated  Annual
     Fees and Expenses per Unit, the Estimated Current Return and the Estimated
     Long Term Return will be adversely affected.

                                      A-6
 387312.1

<PAGE>



                                   QUALIFIED
                      UNIT INVESTMENT LIQUID TRUST SERIES

                                   ("QUILTS")


      The Trusts. QUILTS consists of three separate unit investment trusts
designated  QUILTS  Income--U.S.  Treasury  Series 19 ("Treasury  Income Series
19"), QUILTS Income--U.S. Treasury Series 20 ("Treasury Income Series 20"), and
QUILTS Asset Builder--U.S. Treasury Series 21 ("Asset Builder Series" or "Asset
Builder Series 21") (collectively, the "Trusts"). The Trusts were created under
the laws of the  State  of New York by a Trust  Indenture  and  Agreement  (the
"Trust   Agreement"),   dated  the  initial   Date  of  Deposit,   between  OCC
Distributors,  as sponsor (the  "Sponsor")  and The Chase  Manhattan  Bank,  as
trustee (the  "Trustee").  The Trustee will also act as the  Evaluator  for the
Trusts. On the initial Date of Deposit,  the Sponsor deposited with the Trustee
United States Treasury Obligations that are backed by the full faith and credit
of the United States  Government,  including  delivery  statements  relating to
contracts for the purchase of certain such Securities (the "Securities") in the
aggregate  amount set forth in the "Summary of Essential  Information" for each
Trust and cash or an irrevocable  letter of credit issued by a major commercial
bank in the amount required for such  purchases.  Thereafter,  the Trustee,  in
exchange  for  the  Securities  so  deposited,   delivered  to  the  Sponsor  a
certificate  evidencing the ownership of all of the Units of the Trusts,  which
Units are being  offered by this  Prospectus.  On the initial  Date of Deposit,
each Unit in the Trusts  represents an undivided  interest in the principal and
net  income  of that  Trust in the ratio of one Unit for each  $1.00  principal
amount of  Securities  initially  deposited  in that  Trust.  (See  "The  Trust
Organization" in Part B.)

           Objectives.  The  objective  of the  Trusts is to  obtain  safety of
principal.  Treasury  Income  Series  19 seeks  to  provide  current  quarterly
distributions  of income and Treasury Income Series 20 seeks to provide current
monthly  distributions of income.  With respect to Asset Builder Series 21, the
Trust  seeks to  accumulate  principal  value in the Units over the life of the
Trust.  The Trusts  also seek to provide  investment  flexibility  by  allowing
investors to choose among three portfolios of Securities, each with a differing
weighted  average  maturity  and  quality.  The Trusts  seek to  achieve  these
objectives through  investment in a fixed,  laddered portfolio of United States
Treasury  Securities.  The Trusts  are also  structured  to provide  protection
against  changes in  interest  rates and to pass  through to Unit  Holders  the
exemption from state personal  income taxes afforded to direct owners of United
States obligations.
           99% of the  aggregate  principal  amount of the  Securities in Asset
Builder Series 21 are stripped U.S.  Treasury notes or bonds with maturities of
1 year or more  (hereinafter  referred to as "Zero  Coupon  Bonds").  1% of the
aggregate  principal  amount of the  Securities in Asset Builder  Series 21 are
interest-bearing  securities  which are used to pay the expenses of this Trust.
Any  excess  amounts  remaining  after  expenses  are paid will be paid to Unit
Holders  of this  Trust in cash.  Zero  Coupon  Bonds  provide  for  payment at
maturity at par value,  but do not provide for the payment of current  interest
income.  (For the amount of Zero Coupon Bonds in Asset  Builder  Series 21, and
the cost of such  Securities to that Trust,  see  "Portfolio" for Asset Builder
Series 21 in this Part A).  Investors  generally  will be required to recognize
interest currently, even though they will not receive a corresponding amount of
cash until later years.  Long-term capital gains based upon the difference,  if
any,  between the value of the  Securities at maturity,  redemption or sale and
their  original  purchase  price  at  discount  (plus  the  earned  portion  of
acquisition  discount) are generally  taxed, in the case of  individuals,  at a
rate less than the rate  applicable  to ordinary  income.  (See "Tax Status" in
Part  B.)  Investment  in Asset  Builder  Series  21  should  be made  with the
understanding  that the value of Zero  Coupon  Bonds may be  subject to greater
fluctuation  in  response to changes in  interest  rates than  interest-bearing
Securities.  In  addition,  for  certain  investors,  the accrual of the market
discount  from the Zero Coupon  Bonds is not taxable  until the  Securities  in
Asset  Builder  Series 21 are disposed of or mature.  (See "Tax Status" in Part
B.) Any gain realized on the  disposition or maturities of these  securities is
treated as ordinary interest income


                                      A-7
 387312.1

<PAGE>




to the extent it  represents  accrued  market  discount.  Any excess  over that
amount would  generally  be treated as long-term  capital gain if held for more
than 1 year.

           The Treasury  Securities are direct obligations of the United States
and are  backed by its full  faith and  credit.  The  value of the  Units,  the
estimated  current  return  (not  applicable  to Asset  Builder  Series 21) and
estimated  long-term  return to new purchasers will fluctuate with the value of
the  Securities  included in the  portfolio of each Trust which will  generally
decrease or increase  inversely with changes in prevailing  interest rates. See
"Tax Status" in Part B of this Prospectus.

           With the deposit of the Securities in the Trusts on the initial Date
of Deposit, the Sponsor established a proportionate relationship among the face
amounts of each  Security in the  portfolio  of each  Trust.  During the 90-day
period  following  the  initial  Date  of  Deposit,  the  Sponsor  may  deposit
additional  Securities   ("Additional   Securities"),   contracts  to  purchase
Additional Securities or cash (or a bank letter of credit in lieu of cash) with
instructions to purchase Additional  Securities,  in order to create new Units,
maintaining to the extent practicable the original  proportionate  relationship
among the face amounts of each Security in the portfolio of each Trust.  It may
not be possible to maintain the exact original proportionate relationship among
the Securities deposited on the initial Date of Deposit because of, among other
reasons,  purchase  requirements,   change  in  prices,  or  unavailability  of
Securities.  Replacement  Securities may be acquired under specified conditions
(see "The  Trust" and  "Trust  Administration"  in Part B of this  Prospectus).
Units may be  continuously  offered to the  public by means of this  Prospectus
(see "Public  Offering"  in Part B)  resulting  in a potential  increase in the
number of Units outstanding. Deposits of Additional Securities in the portfolio
of each Trust  subsequent  to the 90-day  period  following the initial Date of
Deposit must replicate  exactly the proportionate  relationship  among the face
amounts of Securities  comprising the portfolio of each Trust at the end of the
initial  90-day period.  No assurance can be given that the Trusts'  objectives
will be achieved.  In  addition,  an  investment  in a Trust can be affected by
fluctuations in interest rates.


           Portfolio  Summaries.  General.  The Trusts are  comprised  of those
Securities  listed in each  "Portfolio"  in this Part A. The  portfolio of each
Trust  initially  consists of contracts to purchase U.S.  Treasury  Obligations
fully  secured by the full faith and  credit of the United  States,  certain of
which have been purchased at a market discount or premium.  Certain  Securities
may have been purchased on a "when, as, and if" issued basis. Interest on these
Securities  begins accruing to the benefit of holders on their respective dates
of delivery.  Unit  Holders will be "at risk" with respect to these  Securities
(i.e.  may derive  either gain or loss from  fluctuations  in the offering side
evaluation of the securities)  from the date they commit for Units.  The Trusts
consist of the Securities (or contracts to purchase the  Securities)  listed in
each  Portfolio  as may continue to be held from time to time in each Trust and
any Additional  Securities  deposited in the Trusts in connection with the sale
of additional Units to the public as described above, together with the accrued
and  undistributed  interest thereon and  undistributed  cash realized from the
sale or redemption of Securities (see "Trust  Administration" in Part B of this
Prospectus). Neither the Sponsor nor the Trustee shall be liable in any way for
any default,  failure or defect in any of the Securities.  However,  should any
deposited  contract fail,  the Sponsor  shall,  within 90 days from the initial
Date of Deposit,  acquire  replacement  Securities and  substitute  them in the
portfolios of the Trust. If the failed Securities are not substituted or if the
purchase price of the  substituted  Securities  does not exceed the cost of the
original  contracts,  the  Sponsor  shall make a pro rata  distribution  of the
amount,  if any, by which the cost of the failed contract  exceeded the cost of
the substituted security on the next scheduled distribution date.
           On  the  Date  of  Deposit  each  Unit  represented  the  fractional
undivided  interest in each Trust set forth under  "Essential  Information" for
each  Trust.  Thereafter,  if any Units are  redeemed  by the  Trustee the face
amount of  Securities  in each Trust will be  reduced by amounts  allocable  to
redeemed Units, and the fractional  undivided interest represented by each Unit
in the balance will be increased.  However,  if additional  Units are issued by
each Trust (through deposit of Securities by the Sponsor in connection with the
sale of additional Units), the aggregate value of Securities in each Trust will
be  increased  by amounts  allocable  to  additional  Units and the  fractional
undivided  interest  represented by each Unit in the balance will be decreased.
Units will remain outstanding until redeemed upon tender

                                      A-8
 387312.1

<PAGE>



     to the Trustee by any Unit Holder (which may include the Sponsor) or until
the termination of the Indenture. 
     The Sponsor has a limited  right to  substitute  other  Securities  in the
Trust   portfolio   in   the   event   of  a   failed   contract.   (See   "The
Trusts--Substitution  of  Securities"  in Part  B.)  Each  Unit  in each  Trust
represents an undivided  interest in the principal and net income of that Trust
in the  ratio of one  Unit  for  each  $1.00  principal  amount  of  Securities
initially deposited in that Trust. (See "The  Trusts--Organization" in Part B.)
(For the specific number of Units in each Trust,  see the "Summary of Essential
Information"  for each Trust in this Part A). The Sponsor has not  participated
as a  sole  underwriter  or  manager,  co-manager  or  member  of  underwriting
syndicates from which any of the Securities were acquired for the Trusts.


           Treasury  Income Series 19.  Treasury Income Series 19 consists of a
fixed portfolio of  interest-bearing  U.S.  Treasury  Obligations with laddered
maturities  from January 31, 1998 to January 31, 1999.  As  Securities  mature,
Treasury Income Series 19 will return to Unit Holders every 3 months  beginning
in January 1998 approximately 20% of the face amount of the amount invested.
           On the initial  Date of Deposit 100% of the  Securities  in Treasury
Income  Series  19 were  purchased  at a  "market"  discount  from par value at
maturity.  Based on the offering side evaluation on the initial Date of Deposit
100% of the aggregate  principal  amount of  Securities  in the portfolio  were
acquired at a discount from par, 0% were at a premium over par and none were at
par. A Unit Holder may receive  more or less than his original  purchase  price
upon  disposition of his Units because the value of Units  fluctuates  with the
value of the underlying  Securities,  which vary inversely with interest rates.
On the initial  Date of  Deposit,  the bid side  evaluation  was lower than the
offering  side  evaluation  by  .06% of the  aggregate  offering  price  of the
Treasury Income Series 19. (See "Public Offering" in Part B.)
           All of the issues of Treasury  Income Series 19 are  represented  by
the  Sponsor's  contracts to  purchase,  which are expected to be settled on or
about July 29, 1996 and none of the issues has been deposited in the Trust.


           Treasury  Income Series 20.  Treasury Income Series 20 consists of a
fixed portfolio of  interest-bearing  U.S.  Treasury  Obligations with laddered
maturities  from  January  31, 1998 to June 30,  2001.  As  Securities  mature,
Treasury Income Series 20 will return to Unit Holders every 12 months beginning
in January 1998 approximately 20% of the face amount of the amount invested.
           On the  initial  Date of Deposit 60% of the  Securities  in Treasury
Income  Series  20 were  purchased  at a  "market  discount  from par  value at
maturity.  Based on the offering side evaluation on the initial Date of Deposit
60% of the aggregate  principal  amount of  Securities  in the  portfolio  were
acquired at a discount from par, 20% were at a premium over par and 20% were at
par. A Unit Holder may receive  more or less than his original  purchase  price
upon  disposition of his Units because the value of Units  fluctuates  with the
value of the underlying  Securities,  which vary inversely with interest rates.
On the initial  Date of  Deposit,  the bid side  evaluation  was lower than the
offering  side  evaluation  by  .06% of the  aggregate  offering  price  of the
Treasury Income Series 20. (See "Public Offering" in Part B.)
           All of the issues of Treasury  Income Series 20 are  represented  by
the  Sponsor's  contracts to  purchase,  which are expected to be settled on or
about July 29, 1996 and none of the issues has been deposited in the Trust.

           Asset  Builder   Series  21.  Asset   Builder   Series  21  consists
principally of a fixed portfolio of stripped U.S.  Treasury notes or bonds with
maturities of 1 year or more, which are referred to as Zero Coupon Bonds.  Zero
Coupon Bonds  provide for payment at maturity at par value,  unless sooner sold
or redeemed, but do not provide for the payment of current interest. The market
value of Zero Coupon Bonds may be subject to greater  fluctuations  than coupon
bonds in response to changes in interest rates. See "The  Trusts--Discount  and
Zero Coupon Bonds" in Part B. The  Securities  in Asset Builder  Series 21 have
consecutive maturities from August 15, 1997 to August 15, 2001 (referred to as

                                      A-9
 387312.1

<PAGE>




"laddered  maturities").  As Securities  mature,  Asset Builder  Series 21 will
return to Unit Holders every 12 months  beginning in August 1997  approximately
20% of the face amount of the amount invested.
           On the  initial  Date of  Deposit  100% of the  Securities  in Asset
Builder  Series 21 were  purchased  at a  "market"  discount  from par value at
maturity.  Based on the offering side evaluation on the initial Date of Deposit
100% of the aggregate  principal  amount of  Securities  in the portfolio  were
acquired at a discount  from par, none were at a premium over par and none were
at par. A Unit Holder may receive more or less than his original purchase price
upon  disposition of his Units because the value of Units  fluctuates  with the
value of the underlying  Securities,  which vary inversely with interest rates.
On the initial  Date of  Deposit,  the bid side  evaluation  was lower than the
offering side  evaluation by .06% of the aggregate  offering price of the Asset
Builder Series 21. (See "Public Offering" in Part B.)
           All of the issues of Asset Builder Series 21 are  represented by the
Sponsor's  contracts to purchase,  which are expected to be settled on or about
July 29, 1996 and none of the issues has been deposited in the Trust.



                                      A-10
 387312.1

<PAGE>



RISK FACTORS

           An  investment  in  Units  of the  Trusts  should  be  made  with an
understanding  of the risks which an investment in fixed rate debt  obligations
may entail,  including  the risk that the value of the  portfolio of each Trust
and hence of the Units of each Trust will  decline  with  increases in interest
rates.  The value of the underlying  Securities  will fluctuate  inversely with
changes in interest rates. The high inflation of prior years, together with the
fiscal  measures  adopted  to attempt to deal with it,  have  resulted  in wide
fluctuations  in interest rates and, thus, in the value of fixed rate long term
debt   obligations   generally.   The  Sponsor  cannot  predict   whether  such
fluctuations will continue in the future.
           In selecting  Securities  for deposit in the Trusts,  the  following
factors,  among others,  were considered by the Sponsor:  (i) the prices of the
Securities  relative to other  comparable  Securities;  (ii) the  maturities of
these  Securities;  and (iii) whether the Securities were issued after July 18,
1984.

           Investment  in Asset  Builder  Series  21  should  be made  with the
understanding  that  the  value of Zero  Coupon  Bonds is  subject  to  greater
fluctuation in response to changes in interest rates. In addition,  the accrued
market discount of such Securities is not taxable to certain categories of Unit
Holders of such Trust  until the  Securities  in such Trust are  disposed of or
mature.


PUBLIC OFFERING PRICE


           The Public Offering Price of each Unit of the Trusts is equal to the
aggregate  offering price of the Securities in each Trust divided by the number
of Units of each  Trust  outstanding,  plus a sales  charge of (a) 1.70% of the
Public  Offering  Price or 1.729% of the net amount  invested in Securities per
Unit of Treasury  Income Series 19, (b) 1.80% of the Public  Offering  Price or
1.833% of the net amount  invested in  Securities  per Unit of Treasury  Income
Series  20,  and (c) 1.80% of the  Public  Offering  Price or 1.833% of the net
amount invested in Securities per Unit of Asset Builder Series 21. In addition,
for Units ordered after the date hereof,  accrued interest will be payable from
the First  Settlement Date for Units of the Trust (three business days from the
date hereof) to the expected  date of  settlement  (three  business  days after
order).  For additional  information  regarding the Public Offering Price,  the
descriptions of interest and principal distributions, repurchase and redemption
of Units and other essential information regarding the Trusts, see the "Summary
of  Essential  Information"  for each Trust in this Part A.  During the initial
offering  period  orders  involving  the  lesser of at least  250,000  Units or
$250,000 for Treasury  Income Series 19, 250,000 Units or $250,000 for Treasury
Income Series 20, 250,000 Units or $250,000 for Asset Builder Series 21 will be
entitled to a volume discount from the Public  Offering Price. In addition,  to
the extent Units of each QUILT trust are currently  available from the Sponsor,
Unit  Holders may elect to  rollover  principal  distributions  paid to them as
Securities  in their  respective  Trust  mature into  additional  units of such
available QUILTS trusts (upon receipt by the Trusts of an appropriate exemptive
order from the Securities  and Exchange  Commission) at a reduced sales charge.
(See  "Public  Offering--Volume  and Other  Discounts"  in Part B.) The  Public
Offering  Price  per  Unit  may  vary  on a  daily  basis  in  accordance  with
fluctuations in the aggregate  offering price of the  Securities.  (See "Public
Offering--Offering Price" in Part B.)




                                      A-11
 387312.1

<PAGE>



DISTRIBUTIONS


           Distributions  of interest  income,  less expenses,  will be made by
Treasury Income Series 19 on a quarterly  basis,  and Treasury Income Series 20
on a monthly basis. The first interest  distributions will be made on the First
Payment  Date to all Unit  Holders  of record on the First  Record  Date of the
Trust  and  thereafter  distributions  will be made on a  quarterly  basis  for
Treasury Income Series 19 and on a monthly basis for Treasury Income Series 20.
Distributions  of  principal,  if any,  will be made annually for Asset Builder
Series  21  beginning  in 1997.  (See  "Rights  of Unit  Holders--Interest  and
Principal  Distributions"  in Part  B.) For  estimated  quarterly  and  monthly
interest distributions,  the amount of the first interest distributions and the
specific  dates  representing  the First Payment Date and the First Record Date
see "Summary of Essential Information" for each Trust in Part A.)


ESTIMATED LONG TERM RETURN AND ESTIMATED CURRENT RETURN


           Units of the Trusts are  offered to  investors  on a "dollar  price"
basis (using the computation method previously described under "Public Offering
Price") as distinguished  from a "yield price" basis often used in offerings of
tax exempt bonds  (involving the lesser of the yield as computed to maturity of
bonds or to an earlier  redemption  date).  Since they are  offered on a dollar
price basis,  the rate of return on an investment  in Units of Treasury  Income
Series 19 and Treasury  Income  Series 20 are  measured in terms of  "Estimated
Current  Return" and "Estimated Long Term Return." The rate of return for Asset
Builder  Series 21 is only measured in terms of  "Estimated  Long Term Return."
This  calculation of performance is mandated by the rules of the Securities and
Exchange Commission.

           Estimated Long Term Return is calculated by: (1) computing the yield
to maturity or to an earlier call date (whichever results in a lower yield) for
each Security in each Trust  portfolio in accordance  with accepted  practices,
which  practices  take  into  account  not only  the  interest  payable  on the
Securities but also the amortization of premiums or accretion of discounts,  if
any; (2) calculating the average of the yields for the Securities in each Trust
portfolio by weighing each Security's yield by the market value of the Security
and by the amount of time remaining to the date to which the Security is priced
(thus  creating an average  yield for the  portfolio  of each  Trust);  and (3)
reducing the average  yield for the portfolio of each Trust in order to reflect
estimated  fees and expenses of each Trust and the maximum sales charge paid by
Unit Holders.  The resulting Estimated Long Term Return represents a measure of
the return to Unit Holders  earned over the estimated  life of each Trust.  The
Estimated  Long Term Return as of the day prior to the initial  Date of Deposit
is stated for the Trusts  under  "Summary of  Essential  Information"  for each
Trust in Part A.
           Estimated  Current  Return is computed by dividing the Estimated Net
Annual  Interest  Income per Unit by the  Public  Offering  Price per Unit.  In
contrast to the Estimated Long Term Return,  the Estimated  Current Return does
not take into account the amortization of premium or accretion of discount,  if
any,  on the  Securities  in the  portfolio  of each Trust.  Moreover,  because
interest rates on Securities  purchased at a premium are generally  higher than
current  interest rates on newly issued bonds of a similar type with comparable
rating, the Estimated Current Return per Unit may be affected adversely if such
Securities  are  redeemed  prior  to their  maturity.  On the  initial  Date of
Deposit,  the  Estimated  Net Annual  Interest  Income per Unit  divided by the
Public Offering Price resulted in the Estimated  Current Return stated for each
applicable  Trust under  "Summary of Essential  Information"  for each Trust in
Part A.
           The Estimated Net Annual Interest Income per Unit of each Trust will
vary with  changes in the fees and  expenses of the  Trustee and the  Evaluator
applicable  to the  Trust  and with  the  redemption,  maturity,  sale or other
disposition  of the  Securities in the Trusts.  The Public  Offering Price will
vary  with  changes  in the  offering  prices  (bid  prices  in the case of the
secondary market) of the Securities.  Therefore, there is no assurance that the
present Estimated Current Return or Estimated Long Term Return will be realized
in the future.


                                      A-12
 387312.1

<PAGE>



MARKET FOR UNITS


           The Sponsor,  although not obligated to do so, currently  intends to
maintain  a  secondary  market for the Units of the  Trusts  after the  initial
public offering has been completed.  The secondary market repurchase price will
be based on the aggregate bid price of the Securities in a Trust portfolio; and
the  reoffer  price  will be  based  on the  aggregate  offering  price  of the
Securities plus a sales charge of (a) 1.70% (1.729% of the net amount invested)
plus net accrued  interest for Treasury  Income Series 19, (b) 1.80% (1.833% of
the net amount  invested) plus net accrued  interest for Treasury Income Series
20, and (c) 1.80% (1.833% of the net amount invested) plus net accrued interest
for Asset Builder  Series 21. If a market is not  maintained a Unit Holder will
be able to redeem his Units with the Trustee at a price based on the  aggregate
bid price of the Unit. (See "Liquidity--Sponsor Repurchase" in Part B.)


                                      A-13
 387312.1

<PAGE>



                          INDEPENDENT AUDITORS' REPORT


The Sponsor, Trustee, and Unit Holders of
Qualified Unit Investment Liquid Trust Series ("QUILTS")
QUILTS Income--U.S. Treasury Series 19
QUILTS Income--U.S. Treasury Series 20
QUILTS Asset Builder--U.S. Treasury Series 21


           We  have  audited  the  accompanying  Statements  of  Condition  and
Portfolios of Qualified Unit Investment Liquid Trust Series ("QUILTS"),  QUILTS
Income--U.S.   Treasury  Series  19  ("Treasury   Income  Series  19"),  QUILTS
Income--U.S.  Treasury Series 20 ("Treasury Income Series 20") and QUILTS Asset
Builder--U.S.  Treasury  Series 21 ("Asset  Builder  Series 21") as of July 23,
1996.   These   statements  are  the   responsibility   of  the  Sponsor.   Our
responsibility  is to express an opinion on the  Statements  of  Condition  and
Portfolios based on our audit.
           We  conducted  our  audit  in  accordance  with  generally  accepted
auditing standards.  Those standards require that we plan and perform the audit
to obtain  reasonable  assurance  about whether the Statements of Condition and
Portfolios are free of material misstatement. An audit includes examining, on a
test basis, evidence supporting the amounts and disclosures in the Statement of
Condition  and  Portfolios.  An audit also includes  assessing  the  accounting
principles  used and  significant  estimates  made by the  Sponsor,  as well as
evaluating the overall financial  statement  presentation.  We believe that our
audit provides a reasonable basis for our opinion.  The irrevocable  letters of
credit  deposited in connection with the securities  owned as of July 23, 1996,
pursuant to contracts to purchase,  as shown in the Statements of Condition and
Portfolios, was confirmed to us by The Chase Manhattan Bank, the Trustee.
           In  our  opinion,  the  accompanying  Statements  of  Condition  and
Portfolios present fairly, in all material respects,  the financial position of
Treasury  Income Series 19,  Treasury Income Series 20 and Asset Builder Series
21 as of July  23,  1996  in  conformity  with  generally  accepted  accounting
principles.





BDO SEIDMAN, LLP
New York, New York
July 23, 1996



                                      A-14
 387312.1

<PAGE>




                                     QUILTS



                            STATEMENTS OF CONDITION
                      AS OF DATE OF DEPOSIT, JULY 23, 1996


                                 TRUST PROPERTY

                            Treasury Treasury Asset
<TABLE>
<CAPTION>



                                                                      Income               Income               Builder
                                                                     Series 19            Series 20            Series 21
                                                                ------------------   ------------------   --------------
<S>                                                                       <C>                  <C>                   <C>     
Investment in Securities:
Sponsor's Contracts to Purchase Underlying Securities
 Backed by Irrevocable Letters of Credit(1)..................             $245,242             $247,008              $207,637
Accrued Interest to Date of Deposit on Securities(1).........                5,040                2,975                   104
Organizational Costs(2)......................................               13,333               13,333                13,333
                                                                            ------               ------                ------
Total........................................................             $263,615             $263,316              $221,074
                                                                          ========             ========              ========

                     LIABILITY AND INTEREST OF UNIT HOLDERS



Liability for Accrued Interest on Securities(1)(5)...........           $    5,040           $    2,975           $       104
Accrued Liability(2)                                                        13,333               13,333                13,333
                                                                            ------               ------                ------
                                                                            18,373               16,308                13,437
Interest of Unit Holders
Units of Fractional Undivided Interest Outstanding:
           Cost to Unit Holders(3)...........................              249,482              251,535              211,442
           Less Gross Underwriting Commissions(4)............                4,240                4,527                 3,805
                                                                ------------------   ------------------   -------------------
Net Amount Applicable to Unit Holders........................              245,242              247,008               207,637
                                                                ------------------   ------------------   -------------------

Total                                                                     $263,615             $263,316              $221,074
                                                                          ========             ========   ===================
</TABLE>




(1)        Aggregate  cost  to the  Trusts  of  the  Securities  listed  in the
           portfolio of each Trust is based on offering  prices  determined  by
           the    Evaluator   on   the   basis   set   forth   under    "Public
           Offering--Offering  Price"  as of 12:00  Noon on July 23,  1996.  An
           irrevocable  letter of credit issued by Credit Lyonnais in an amount
           of  $2,000,000  has been  deposited  with the  Trustee  to cover the
           purchase  of $750,000  principal  amount of  Securities  pursuant to
           contracts to purchase such Securities and $8,516 accrued interest on
           such Securities to the expected dates of settlement.
(2)        Organizational  costs  incurred by the Trusts have been deferred and
           will be amortized over the life of each of the Trusts or five years,
           whichever  is  shorter.  The Trust will  reimburse  the  Sponsor for
           actual  organizational  costs  incurred  up to a maximum of $.20 per
           1,000 Units per annum. To the extent the Trust is larger or smaller,
           the actual dollar amount reimbursed may vary.
(3)        Aggregate  public offering price (exclusive of interest) is computed
           on 250,000,  250,000,  and 250,000 Units for Treasury  Income Series
           19,  Treasury  Income  Series  20,  and  Asset  Builder  Series  21,
           respectively,    on   the   basis   set    forth    under    "Public
           Offering--Offering Price" in Part B.
(4)        Sales charge of 1.70%  computed on 250,000 Units of Treasury  Income
           Series 19, 1.80% computed on 250,000 Units of Treasury Income Series
           20, and 1.80%  computed on 250,000 Units of Asset Builder  Series 21
           on the basis set forth under "Public Offering Price" in Part B.
(5)        On the basis set forth under "Public Offering--Accrued  Interest" in
           Part B, the Trustee will  advance the amount of accrued  interest as
           of July 29,  1996 (the  "First  Settlement  Date"),  and all accrued
           interest to the First  Settlement  Date will be  distributed  to the
           Sponsor  as the Unit  Holder of  record  as of the First  Settlement
           Date.  Consequently,  the amount of accrued  interest to be added to
           the  public  offering  price  of Units  will  include  only  accrued
           interest from the First Settlement Date to date of settlement,  less
           any distributions  from the Interest Account subsequent to the First
           Settlement Date.


                                      A-15
 387312.1

<PAGE>



                                     QUILTS


                           Treasury Income Series 19


                      AS OF DATE OF DEPOSIT, JULY 23, 1996


<TABLE>
<CAPTION>

                    Aggregate                                             Coupon/          Cost of
   Portfolio        Principal            Title of Securities              Maturity         Securities
      No.           Amount               Contracted for (1)               Dates            to Trust (2)
      ---           ------               ------------------               -----            ------------

      <S>            <C>                  <C>                             <C>              <C>      
       1             50,000               U.S. Treasury Note              5.625%           $  49,633
                                                                          1/31/98

       2             50,000               U.S. Treasury Note              5.875%              49,727
                                                                          4/30/98

       3             50,000               U.S. Treasury Note              5.250%              49,070
                                                                          7/31/98

       4             50,000               U.S. Treasury Note              4.750%               48,375
                                                                          10/31/98

       5             50,000               U.S. Treasury Note              5.000%               48,437
                                                                          1/31/99
                    --------                                                                ---------
                   $250,000                                                                  $245,242
                   =========                                                                 ========

</TABLE>



                      ESTIMATED CASH FLOWS TO UNIT HOLDERS

           The  Table   below  sets  forth  the  per  1,000   Units   estimated
distributions  of interest and principal to Unit Holders.  The table assumes no
changes in Trust  expenses,  no  redemptions  or sales of the  underlying  U.S.
Treasury  Obligations  prior to maturity and the receipt of all  principal  due
upon  maturity.   To  the  extent  the  foregoing   assumptions  change  actual
distributions will vary.

<TABLE>
<CAPTION>
                                                 Estimated Interest       Estimated Principal      Estimated Total
Quilts Treasury Income Series 19                    Distribution             Distribution            Distribution
- --------------------------------                    ------------             ------------            ------------
<S>                                                     <C>                     <C>                        <C>
October 1996                                            10.91                      -                        10.91
January 1997                                            12.92                      -                        12.92
April 1997                                              12.92                      -                        12.92
July 1997                                               12.92                      -                        12.92
October 1997                                            12.92                      -                        12.92
January 1998                                            12.92                   200.00                     212.92
April 1998                                              10.15                   200.00                     210.15
July 1998                                               7.25                    200.00                     207.25
October 1998                                            4.67                    200.00                     204.67
January 1999                                            2.33                    200.00                     202.33

</TABLE>



                                      A-16
 387312.1

<PAGE>



                                     QUILTS


                           Treasury Income Series 20


                      AS OF DATE OF DEPOSIT, JULY 23, 1996

<TABLE>
<CAPTION>


                                                                                            Coupon/                Cost of
     Portfolio           Aggregate Principal           Title of Securities                  Maturity               Securities
        No.                    Amount                  Contracted for (1)                   Date(s)                to Trust (2)
        ---                    ------                  ------------------                   -------                ------------

         <S>              <C>                          <C>                                  <C>                     <C>    
         1                $ 50,000                     U.S. Treasury Note                   5.625%                  $ 49,633
                                                                                            1/31/98
         2                  50,000                     U.S. Treasury Note                   6.375%                    50,039
                                                                                            1/15/99
         3                  50,000                     U.S. Treasury Note                   6.375%                    49,805
                                                                                            1/15/00
         4                  50,000                     U.S. Treasury Note                   5.250%                    47,531
                                                                                            1/31/01
         5                  50,000                     U.S. Treasury Note                   6.625%                    50,000
                          _________                                                         6/30/01                  _________
                          $250,000                                                                                   $247,008
                          ========                                                                                   ========

</TABLE>



                      ESTIMATED CASH FLOWS TO UNIT HOLDERS

           The  Table   below  sets  forth  the  per  1,000   Units   estimated
distributions  of interest and principal to Unit Holders.  The table assumes no
changes in Trust  expenses,  no  redemptions  or sales of the  underlying  U.S.
Treasury  Obligations  prior to maturity and the receipt of all  principal  due
upon  maturity.   To  the  extent  the  foregoing   assumptions  change  actual
distributions will vary.

<TABLE>
<CAPTION>

                                         Estimated Interest       Estimated Principal      Estimated Total
Quilts Treasury Income Series 20            Distribution             Distribution            Distribution
- --------------------------------            ------------             ------------            ------------
<S>                                             <C>                    <C>                        <C> 
August 1996                                     2.62                       -                         2.62
September 1996 - December 1997                  4.91                       -                         4.91
January 1998                                    4.91                    200.00                     204.91
February 1998 - December 1998                   3.99                       -                         3.99
January 1999                                    3.99                    200.00                     203.99
February 1999 - December 1999                   2.95                       -                         2.95
January 2000                                    2.95                    200.00                     202.95
February 2000 - December 2000                   1.90                       -                         1.90
January 2001                                    1.90                    200.00                     201.90
February 2001 - May 2001                        1.04                       -                         1.04
June 2001                                       1.04                    200.00                     201.04

</TABLE>


                                      A-17
 387312.1

<PAGE>



                                     QUILTS


                            Asset Builder Series 21


                      AS OF DATE OF DEPOSIT, JULY 23, 1996

<TABLE>
<CAPTION>
                                                                            Coupon/                Cost of
     Portfolio       Aggregate Principal       Title of Securities          Maturity               Securities
        No.          Amount                    Contracted for (1)           Date(s)                to Trust (2)
        ---           ------                    ------------------          -------                ------------
         <S>         <C>                        <C>                          <C>                   <C>      
         1           $ 50,000                   U.S. Treasury Strip          0.000%                $  47,039
                                                                             8/15/97
         2             50,000                   U.S. Treasury Strip          0.000%                   44,010
                                                                             8/15/98
         3             50,000                   U.S. Treasury Strip          0.000%                   41,123
                                                                             8/15/99
         4             50,000                   U.S. Treasury Strip          0.000%                   38,502
                                                                             8/15/00
         5             47,000                   U.S. Treasury Strip          0.000%                   33,804
                                                                             8/15/01
         6              3,000                   U.S. Treasury Note           7.875%                    3,159
                     ________                                                8/15/01                 _______
                     $250,000                                                                      $ 207,637
                     ========                                                                      =========

</TABLE>



                                      A-18
 387312.1

<PAGE>


                            FOOTNOTES TO PORTFOLIOS



(1)        Contracts to purchase the  Securities  were entered into on July 23,
           1996 for Treasury  Income Series 19,  Treasury  Income Series 20 and
           Asset Builder Series 21. All contracts are expected to be settled on
           or about the First  Settlement  Date of each Trust which is expected
           to be July 29, 1996, for Treasury  Income Series 19, Treasury Income
           Series 20 and Asset Builder
           Series 21.


(2)        Evaluation  of  Securities by the Evaluator was made on the basis of
           current offering prices for the Securities.  The offering prices are
           greater than the current bid prices of the Securities  which are the
           basis on which Unit Value is  determined  for purposes of redemption
           of Units.  (See  "Public  Offering--Comparison  of  Public  Offering
           Price, Sponsor's Repurchase Price and Redemption Price" in Part B.)

<TABLE>
<CAPTION>
                                 The  aggregate value of Securities in the Trust,           Additional information regarding the 
                                 based on the bid  prices on the Date of Deposit,           Trust is as follows:
                                 are as follows:
                                 Value of Securities Based Upon
                                 Bid Side Evaluation                                         Sponsor's Purchase Price

<S>                               <C>                                                        <C> 

Treasury Income Series 19         $245,086                                                   $245,289
Treasury Income Series 20         $246,867                                                   $247,122
Asset Builder Series 21           $207,520                                                   $207,866
                                  Cost of Securities Based Upon                              Sponsor's Loss
                                  Offering Side Evaluation                                   (Date of Deposit)
Treasury Income Series 19         $245,242                                                    $ (47)
Treasury Income Series 20         $247,008                                                    $(114)
Asset Builder Series 21           $207,637                                                    $(229)


                                  Difference in Dollars                                       Annual Interest Income
Treasury Income Series 19         $156                                                        $13,250
Treasury Income Series 20         $141                                                        $15,125
Asset Builder Series 21           $117                                                        $   236
                                  % Difference Between Bid Side Evaluation
                                  and Offering Side Evaluation
Treasury Income Series 19         .06%
Treasury Income Series 20         .06%
Asset Builder Series 21           .06%

</TABLE>

                                  UNDERWRITING


           OCC Distributors,  Two World Financial  Center,  225 Liberty Street,
New York, NY  10281-1698  will act as  Underwriter  for all of the Units of the
Trusts.   The   Underwriter   will   distribute   the  Units  through   various
broker-dealers,   banks  and/or  other  eligible   participants   (see  "Public
Offering-Distribution of Units" in Part B).




                                      A-19
 387312.1

<PAGE>

                               PROSPECTUS PART B
 Part B of this Prospectus may not be Distributed unless Accompanied by Part A

            QUALIFIED UNIT INVESTMENT LIQUID TRUST SERIES ("QUILTS")


      QUILTS Income--U.S. Treasury Series 19 ("Treasury Income Series 19")
      QUILTS Income--U.S. Treasury Series 20 ("Treasury Income Series 20")
   QUILTS Asset Builder--U.S. Treasury Series 21 ("Asset Builder Series 21")



THE TRUST


         Organization. "QUILTS" is comprised of three separate "unit investment
trusts"  designated as set forth above in Part A. The Trusts were created under
the laws of the State of New York  pursuant to a Trust  Indenture and Agreement
(the "Trust Agreement"),  dated the Date of Deposit,  between OCC Distributors,
as Sponsor,  and The Chase Manhattan Bank, as Trustee.  The Trustee acts as the
Evaluator for the Trusts.

         On the Date of Deposit  the  Sponsor  deposited  with the  Trustee the
underlying  securities and contracts and funds  represented by the  irrevocable
letter(s) of credit issued by major commercial bank(s) for the purchase of such
securities (the "Securities"). See "Portfolio" for each Trust in Part A of this
Prospectus.  The Trusts are created  simultaneously  with the  execution of the
Trust Agreement and the deposit of the Securities with the Trustee. The Trustee
then immediately  delivered to the Sponsor  certificates of beneficial interest
(the "Certificates") representing the units (the "Units") comprising the entire
ownership of the Trusts.  Through this Prospectus,  the Sponsor is offering the
Units,  including  Additional  Units, as defined below, for sale to the public.
The  holders of Units (the  "Unit  Holders")  will have the right to have their
Units  redeemed at a price based on the  aggregate  bid side  evaluation of the
Securities  (the  "Redemption  Price") if they cannot be sold in the  secondary
market which the Sponsor,  although not obligated to, proposes to maintain.  In
addition,  the Sponsor may offer for sale through this  Prospectus  Units which
the Sponsor may have  repurchased in the secondary market or upon the tender of
such Units for redemption.
         With the  deposit  of the  Treasury  Securities  in the  Trusts on the
initial Date of Deposit,  the Sponsor established a proportionate  relationship
among the principal  amounts of interest bearing and non-interest  bearing U.S.
Treasury  Obligations  of specified  ranges of maturities on the  portfolios of
each Trust. During the 90-day period following the Date of Deposit, the Sponsor
is permitted  under the Trust Agreement to deposit  additional  Securities (the
"Additional  Securities")  and any cash in the Trusts not held for distribution
to Unit Holders prior to the deposit,  resulting in a corresponding increase in
the number of Units outstanding (the "Additional Units"). Such Additional Units
may be continuously offered for sale to the public by means of this Prospectus.
The Sponsor anticipates that any Additional  Securities deposited in the Trusts
during the 90-day period  subsequent to the Date of Deposit will  maintain,  as
far as practicable, the original proportionate relationship among the principal
amounts of U.S. Treasury Obligations in the portfolios  established on the Date
of Deposit. Precise duplication of this original proportionate relationship may
not be possible  because  fractions  of U.S.  Treasury  Obligations  may not be
purchased or for other reasons, but duplication will continue to be the goal in
connection  with any such deposit of  Additional  Securities.  (These  original
proportionate relationships on the Date of Deposit are set forth in "Summary of
Essential  Information,"  for each  Trust in Part A.)  Deposits  of  Additional
Securities  in the  portfolios  of each Trust  subsequent  to the 90-day period
following  the  Date  of  Deposit  must  replicate  exactly  the  proportionate
relationship   among  the  principal  amounts  of  Securities   comprising  the
portfolios of each Trust at the time of replication.
         A "Unit"  represents  an  undivided  interest or pro rata share in the
principal  and  interest  of each Trust in the ratio of one Unit for each $1.00
principal  amount of  Securities  initially  deposited  in each Trust.  Because
regular  payments of principal are to be received and certain of the Securities
will  mature  in  accordance  with  their  terms or may be sold  under  certain
circumstances described herein and


387339.1

<PAGE>



because  Additional  Securities  may be deposited  into the Trusts from time to
time, the Trusts are not expected to retain their present size and composition.
To the  extent  that any Units are  redeemed  by the  Trustee,  the  fractional
undivided  interest  or pro  rata  share  in  such  Trust  represented  by each
unredeemed  Unit will  increase,  although  the actual  interest  in such Trust
represented  by  such  fraction  will  remain  unchanged.   Units  will  remain
outstanding  until  redeemed upon tender to the Trustee by Unit Holders,  which
may include the Sponsor, or until the termination of the Trust Agreement.


         Objectives.  The Trusts offer investors the opportunity to participate
in a portfolio of U. S.  Treasury  Obligations  with a greater  diversification
than they might be able to acquire  themselves.  The objective of the Trusts is
to provide  safety of  principal.  Treasury  Income  Series 19 seeks to provide
current  quarterly  distributions of income and Treasury Income Series 20 seeks
to provide  current  monthly  distributions  of income.  With  respect to Asset
Builder Series 21, the Trust seeks to accumulate  principal  value in the Units
over the life of the Trust. The Trusts seek to provide  investment  flexibility
by allowing  investors to choose among three portfolios of Securities that have
differing  maturities and quality.  Investors  should be aware that there is no
assurance the Trusts'  objectives will be achieved.  Even though the portfolios
of Treasury Income Series 19 and Treasury Income Series 20 consist primarily of
U.S.  Treasury  Obligations,  each of which pay  interest  no more  often  than
semi-annually,  Treasury  Income  Series 19 will pay  interest  quarterly,  and
Treasury Income Trust 20 will pay interest monthly through advances made by the
Trustee,  which  will  then be  reimbursed  when  interest  is  received.  (See
"Interest and Principal Distributions" in this Part B.)

         Since disposition of Units prior to final liquidation of the Trust may
result in an  investor  receiving  less  than the  amount  paid for such  Units
(see"Public Offering--Comparison of Public Offering Price, Sponsor's Repurchase
Price and  Redemption  Price" in this Part B), the purchase of a Unit should be
looked  upon as a  long-term  investment.  The  Trust is not  designed  to be a
complete investment program.
         Portfolios.   General.  The  Trusts  consist  of  the  Securities  (or
contracts to purchase such  Securities  together with an irrevocable  letter or
letters of credit for the purchase of such contracts)  listed under "Portfolio"
for each Trust in Part A of this  Prospectus,  as long as such  Securities  may
continue  to be  held  from  time  to time  in the  Trusts  (including  certain
securities  deposited  in the  Trusts  in  exchange  or  substitution  for  any
Securities   pursuant  to  the  Trust  Agreement)  together  with  accrued  and
undistributed  interest thereon and  undistributed and uninvested cash realized
from the disposition of Securities. Because certain of the Securities from time
to time may be redeemed or will mature in accordance with their terms or may be
sold under certain  circumstances  described herein, a Trust is not expected to
retain for any length of time its present size and composition.
         The Sponsor  although not  obligated  to do so,  intends to maintain a
secondary  market  for the Units on the bid side of the  market  for the Units.
(See "Liquidity--Sponsor  Repurchase",  herein.) Unit Holders of the Trusts, in
the absence of a secondary  market for Units will have the right to have one or
more  of  their  Units  redeemed  with  the  Trustee  at a price  equal  to the
Redemption  Price thereof  (see"Liquidity--Sponsor  Repurchase" in this Part B)
based on the then  aggregate bid price for the  Securities in the portfolios of
each Trust.  Due to  fluctuations  in the market price of the Securities in the
portfolios and the fact that the initial Public  Offering Price is based on the
offering  side of the market and includes a sales  charge among other  factors,
the amount  realized by a Unit Holder upon the  redemption or sale of Units may
be less than the price paid for such units by the Unit Holder.

         The  portfolio  of each Trust  consists  of  Securities  issued by the
United  States of  America  ("U.S.  Treasury  Obligations"),  which are  direct
obligations of the United States and therefore are backed by the full faith and
credit of the United  States  Government.  The U.S.  Treasury  Obligations  are
different issues of bonds, bills, notes,  debentures and other debt obligations
with fixed final maturity dates. None of the U.S. Treasury Obligations have any
equity or conversion features. All of the U.S. Treasury Obligations in Treasury
Income  Series 19 and Treasury  Income  Series 20 are current  interest-bearing
obligations  of the United States of America,  or in the case of U.S.  Treasury
Obligations not delivered on the initial Date of Deposit  contracts to purchase
such obligations assigned to the Trustee. Most of


                                       2
387339.1

<PAGE>



the U.S.  Treasury  Obligations  in Asset Builder Series 21 consist of stripped
U.S.  Treasury notes and bonds with  maturities of 1 year or more  (hereinafter
referred to as "Zero Coupon Bonds"). The balance of the portfolio of this Trust
consists of interest-bearing obligations used to pay expenses of the Trust. Any
excess  amounts after expenses are paid will be paid to Unit Holders in cash. A
Zero  Coupon  Bond makes no present  interest  payments.  Rather,  it makes one
payment on its face amount at maturity.
         U. S. Treasury  Obligations  represent  100% of the  aggregate  market
value of the portfolios of each Trust. These U.S. Treasury Obligations are sold
by the  United  States  Department  of  Treasury  (the  "Treasury")  to finance
shortfalls  between the Treasury's income and expenditures.  Such gaps may have
been planned and accounted for in the budget, or they may arise from unexpected
changes in economic,  political, fiscal and other circumstances.  U.S. Treasury
Obligations  constitute  public debt of the United  States and are,  therefore,
direct obligations of the United States.
         When selecting U.S. Treasury Obligations for the Trusts, the following
factors,  among  others,  were  considered  by the Sponsor:  (i) the prices and
yields  of  such  U.S.  Treasury   Obligations  relative  to  other  comparable
securities;  (ii) the maturities of such U.S. Treasury  Obligations;  and (iii)
whether the U.S. Treasury Obligations were issued after July 18, 1984.
         The yields on U.S.  Treasury  Obligations of the type deposited in the
Trusts are  dependent on a variety of factors,  including  general money market
conditions,  fluctuations in prevailing  interest rates,  general conditions of
the  government  securities  markets,  size of a  particular  offering  and the
maturity of the obligations.

RISK FACTORS

         Risk Factors. An investment in Units of the Trusts should be made with
an  understanding  of  the  risks  which  an  investment  in  fixed  rate  debt
obligations may entail,  including the risk that the value of the portfolios of
each Trust,  and hence of the Units,  will decline with increases in prevailing
interest rates. The value of the underlying Securities will fluctuate inversely
with  changes in  prevailing  interest  rates.  In recent  years,  the national
economy  has  experienced  significant  variations  in rates of  inflation  and
economic  growth,  substantial  increases  in the  national  debt,  substantial
increase in reliance upon foreign  investors to finance the national  debt, and
material reformulation of federal tax, monetary and regulatory policies.  These
conditions have been associated with wide  fluctuations in prevailing  interest
rates and thus in the value of fixed rate debt obligations.  The Sponsor cannot
predict whether such fluctuations will continue in the future.
         The  Securities in the portfolios of each Trust were chosen in part on
the basis of their  respective  stated maturity  dates.  The ranges of maturity
dates of each of the  Securities  contained in the portfolios of each Trust are
shown on the "Portfolio" for each Trust in Part A of this Prospectus.
         The Trusts may be appropriate  for investors who desire to invest in a
portfolio of taxable  fixed income  federal  securities  offering the safety of
principal provided by an investment in U.S. Treasury  Obligations backed by the
full faith and credit of the United  States  Government.  The Trusts  generally
pass though to Unit Holders the exemptions from state and local personal income
taxes afforded to direct owners of U.S. Obligations. The Trusts are appropriate
for qualified  retirement plans. (See "Retirement Plans" in this Part B.) These
Trusts may also be particularly appropriate for foreign investors as the income
from the  Trusts,  provided  certain  conditions  are met,  will be exempt from
withholding for U.S. Federal income tax purposes. (See "Tax Status".)
         Certain of the  Securities  in the Trusts may have been  acquired at a
market premium.  Securities trade at a premium because the prevailing  interest
rates on the Securities are higher than interest on comparable  debt securities
being issued at currently  prevailing  interest  rates.  The current returns of
securities  trading at a market premium are higher than the current  returns of
comparably  rated  debt  securities  of a  similar  type  issued  at  currently
prevailing interest rates because premium securities tend to decrease in market
value as they approach maturity, when the face amount becomes payable.  Because
part of the purchase price is thus returned not at maturity but through current
income  payments,  an early  redemption  at par of a  security  purchased  at a
premium or a maturity at par of a security  purchased  at a premium will result
in a reduction in yield and a loss of principal to the Unit

                                       3
387339.1

<PAGE>



Holders. If currently  prevailing interest rates for newly issued and otherwise
comparable  securities  increase,  the  market  premium  of  previously  issued
securities  will decline and if currently  prevailing  interest rates for newly
issued comparable  securities decline,  the market premium of previously issued
securities will increase, all other things being equal. Furthermore,  the value
of the Units will  fluctuate with  fluctuations  in the value of the underlying
Securities in the  portfolios of each Trust.  Therefore,  Unit Holders who sell
their Units prior to  termination  may receive more or less than their original
purchase price upon sale. Market premium  attributable to interest rate changes
does not indicate market confidence in the issue.

         Substitution of Securities.  Neither the Sponsor nor the Trustee shall
be  liable  in any  way  for  any  default,  failure  or  defect  in any of the
Securities.  In the event of a failure to deliver  any  Security  that has been
purchased for the Trusts under a contract, including those Securities purchased
on a "when,  as, and if" issued  basis  ("Failed  Securities"),  the Sponsor is
authorized  under the Trust  Agreement  to direct the Trustee to acquire  other
securities ("Replacement  Securities") and to substitute them in the portfolios
of the Trusts within 90 days of the initial Date of Deposit.
         Replacement  Securities  must be deposited  with the Trustee within 20
days after delivery of notice of a Failed  Security (but in no event later than
the 90th day  following  the initial Date of Deposit)  and the  purchase  price
thereof  (exclusive  of  accrued  interest)  may not exceed the amount of funds
reserved by the Trustee  pursuant to a letter of credit supplied by the Sponsor
for the purchase of the failed Security. The Replacement Securities must (i) be
U.S. Treasury Obligations, (ii) have a fixed maturity approximately the same as
the fixed maturity of the Security replaced,  and (iii) be purchased at a price
that results in a yield to maturity and in a current return, in each case as of
the date on which such  Replacement  are deposited  with the Trustee,  which is
equivalent  (taking into  consideration  then current market conditions and the
relative  creditworthiness  of  the  underlying  obligation)  to the  yield  to
maturity  and  current  return  of the  related  Failed  Security.  Whenever  a
Replacement  Security has been acquired for a Trust, the Trustee shall,  within
five  days  thereafter,  notify  all Unit  Holders  of the  acquisition  of the
Replacement  Security  and shall,  no later than the next  Quarterly or Monthly
Payment Date, make a pro rata  distribution of the amount, if any, by which the
cost to the Trust of the Failed  Security  exceeded the cost of the Replacement
Security.
         If the  right  of  limited  substitution  described  in the  preceding
paragraph shall not be utilized to acquire Replacement  Securities in the event
of a failed  contract,  the Sponsor will refund to each Unit Holder the portion
of the  sales  charge  and the pro  rata  portion  of the  cost of such  Failed
Securities,  and distribute the principal and accrued interest  attributable to
such Failed  Securities on the next  Quarterly or Monthly  Payment Date. In all
cases, accrued interest  attributable to Failed Securities will be paid to Unit
Holders  until  such time as  Replacement  Securities  are  acquired.  All such
interest  paid to a Unit  Holder  which  accrued  after  the  expected  date of
settlement for purchase of his Units will be paid by the Sponsor.
         Because certain of the Securities from time to time may be redeemed or
will  mature  in  accordance  with  their  terms or may be sold  under  certain
circumstances,  no  assurance  can be given that the Trusts will  retain  their
present size and composition for any length of time. The proceeds from the sale
of a Security  or the  exercise of any  redemption  or call  provision  will be
distributed to Unit
Holders  except to the extent such proceeds are applied to meet  redemptions of
Units. (See "Liquidity--Trustee Redemption" in this Part B.)


         Discount and Zero Coupon Bonds. Most of the aggregate principal amount
of the Securities in Asset Builder  Series 21 are stripped U.S.  Treasury notes
or bonds  with  maturities  of 1 year or more,  which are  referred  to as Zero
Coupon  Bonds.  The  balance  of  the  portfolio  of  this  Trust  consists  of
interest-bearing  obligations  used to pay  expenses  of the Trust.  Any excess
amounts remaining after expenses are paid will be paid to Unit Holders in cash.
Zero Coupon  Bonds do not provide for the payment of any current  interest  and
provide for payment at maturity at face value  unless  sooner sold or redeemed.
The market  value of Zero  Coupon  Bonds is subject to greater  fluctuation  in
response to changes in prevailing  interest rates.  Zero Coupon Bonds generally
are subject to redemption at


                                       4
387339.1

<PAGE>



compound  accreted value based on par value at maturity.  Because the issuer is
not obligated to make current interest payments,  Zero Coupon Bonds may be less
likely to be redeemed than coupon bonds issued at a similar prevailing interest
rates.  In the case of certain  categories of Unit Holders,  the accrued market
discount  from Zero  Coupon  Bonds is not  taxable  until such  Securities  are
disposed  of or  have  matured.  The  accrued  portion  of such  discount  will
generally be treated as taxable  interest income for regular federal income tax
purposes.  Upon sale or redemption,  any gain realized that is in excess of the
earned  portion of  acquisition  discount will be taxable as long-term  capital
gain if the Zero Coupon Bonds have been held for more than one year.  (See "Tax
Status" in this Part B.) The current  value of a Zero Coupon Bond  reflects the
present value of its face amount at maturity.  (See"Portfolio  Summary" in Part
A.)
         Some of the aggregate principal amount of Securities in the Trusts may
have been  purchased at a "market"  discount  from par value at  maturity.  The
coupon interest rates on the discount bonds at the time they were purchased and
deposited in the Trusts were lower than the current  market  interest rates for
newly issued bonds of  comparable  rating and type. At the time of issuance the
discount  bonds were for the most part issued at then current  coupon  interest
rates.  The current  yields (coupon  interest  income as a percentage of market
price) of discount  bonds will be lower than the current  yields of  comparably
rated bonds of similar  type newly  issued at current  interest  rates  because
discount  bonds tend to increase in market value as they approach  maturity and
the full  principal  amount  becomes  payable.  A market  discount bond held to
maturity will have a larger  portion of its total return in the form of capital
gain and less in the form of  interest  income  than a  comparable  bond  newly
issued at  current  yield  and a lower  current  market  value  than  otherwise
comparable bonds with a shorter term of maturity.  If prevailing interest rates
rise,  the value of discount bonds will  decrease;  and if prevailing  interest
rates decline, the value of discount bonds will increase. The discount does not
necessarily indicate a lack of market confidence in the issuer.

PUBLIC OFFERING


         Offering  Price.  The Public  Offering Price per Unit of each Trust is
computed by adding to the aggregate  offering  price of the  Securities in each
Trust  divided by the number of Units  outstanding  for that  Trust,  an amount
equal to (a) 1.70% of the aggregate  offering  price of the Securities per Unit
which is equal to 1.729% of the  Public  Offering  Price  for  Treasury  Income
Series 19, (b) 1.80% of the aggregate offering price of the Securities per Unit
which is equal to 1.833% of the  Public  Offering  Price  for  Treasury  Income
Series 20 and (c) 1.80% of the aggregate  offering  price of the Securities per
Unit which is equal to 1.833% of the Public  Offering  Price for Asset  Builder
Series 21. A proportionate share of accrued interest on the Securities from the
First Settlement Date to the expected date of settlement for the Units is added
to the Public  Offering Price.  Accrued  interest is the accumulated and unpaid
interest  on a  Security  from the last day on which  interest  was paid and is
accounted  for daily by the  applicable  Trusts at the  initial  daily rate set
forth under  "Summary of Essential  Information"  for each Trust in Part A. The
Public  Offering Price for each Trust can vary on a daily basis from the amount
stated in this Prospectus in accordance with  fluctuations in the prices of the
Securities and the price to be paid by each investor will be computed as of the
date the Units are purchased.

         The aggregate offering side evaluation of the Securities is determined
by the Evaluator for such Trust (a) on the basis of current  offering prices of
the  Securities,  (b) if an offering  price is not available for any particular
Security,  on the basis of current  offering prices for comparable  securities,
(c) by determining  the value of the Securities on the offer side of the market
by appraisal,  or (d) by any combination of the above.  This evaluation is made
on the  initial  Date of  Deposit as of 12:00 Noon New York Time and as of 4:00
P.M. each business day thereafter during the initial public offering, effective
for all orders  received during the preceding  24-hour period.  With respect to
the initial  evaluation of the offering prices of certain  Securities  which at
the initial Date of Deposit were subject to syndicate  offering  period pricing
restrictions,  it is the practice of the Evaluator to determine such evaluation
on the basis of the syndicate  offering  price,  unless other factors cause the
Evaluator  to  conclude  that  such  syndicate  offering  price  does  not then
accurately reflect the free market value of such Securities, in

                                       5
387339.1

<PAGE>



which  case the  Evaluator  will  also  take into  account  the other  criteria
described above for the purpose of making its determination.
         The  Evaluator  may  obtain  current  bid or  offering  prices for the
Securities  from  investment  dealers or brokers  (including  the Sponsor) that
customarily deal in U.S.  Treasury  Obligations with respect to the Trusts,  or
from any other reporting  service or source of information  which the Evaluator
deems appropriate.

         Accrued  Interest.  Accrued  interest  is the  accumulation  of unpaid
interest  on a bond  from  the last day on which  interest  thereon  was  paid.
Interest on  Securities  in the Trusts is actually  paid  semi-annually  to the
Trusts.  However,  interest  on the  Securities  in the  applicable  Trusts  is
accounted  for daily on an accrual  basis.  Because of this,  the Trusts always
have an amount of interest  earned but not yet collected by the Trustee because
of non-collected  coupons.  For this reason, the Public Offering Price of Units
of the Trusts  will have  added to it the  proportionate  share of accrued  and
undistributed interest to date of settlement.
         In an effort to reduce  the  amount of accrued  interest  which  would
otherwise have to be paid in addition to the Public  Offering Price on the sale
of Units to the public, the Trustee will advance the amount of accrued interest
as of the First  Settlement  Date as set  forth in the  "Summary  of  Essential
Information"  for each Trust in Part A and the same will be  distributed to the
Sponsor  as the  Unit  Holder  of  record  as of  the  First  Settlement  Date.
Consequently, the amount of accrued interest to be added to the Public Offering
Price of Units will  include only accrued  interest  from the First  Settlement
Date to date of settlement,  less any  distributions  from the Interest Account
subsequent to the First  Settlement Date. Thus, since the First Settlement Date
is the  date of  settlement  for  anyone  ordering  Units  on the  date of this
Prospectus,  no accrued  interest will be added to the Public Offering Price of
Units ordered on the initial Date of Deposit.
         Except through an advancement of its own funds,  the Trustee will have
no cash for distribution to Unit Holders until it receives interest payments on
the Securities in the Trust. The Trustee has agreed to make advancements of its
own funds in order to reduce the  amount of time  before  monthly or  quarterly
distributions of interest in Unit Holders commence (see "Interest and Principal
Distributions").  The Trustee will recover its advancements without interest or
other  costs to such Trust from  interest  received  on the  Securities  in the
Trust. When these  advancements have been recovered,  regular  distributions of
interest to Unit Holders will be  commenced.  The Interest  Account  during the
initial months of the Trusts will include some cash representing interest which
has been  collected  but will  predominantly  consist  of  uncollected  accrued
interest  which is not available for  distribution.  Since the Trusts  normally
receive  the  interest  on  Securities  twice a year  and the  interest  on the
Securities in the Trusts is accrued on a daily basis,  the Trusts  usually will
have an amount of interest accrued but not actually received and distributed to
Unit Holders. A Unit Holder will not recover his proportionate share of accrued
interest until the Units are sold or redeemed, or such Trust is terminated.  At
that time, the Unit Holder will receive his proportionate  share of the accrued
interest computed to the settlement date in the case of sale or termination and
to the date of tender in the case of redemption.

         Volume and Other Discounts.  Units of the Trusts are available to Unit
Holders at a volume discount ("Volume Discount") from the Public Offering Price
during the initial public offering.  Volume Discount will result in a reduction
of the sales charge applicable to such purchases.  Furthermore, Volume Discount
applies to the cumulative  Units  purchased by a Unit Holder during a period of
60 days from the initial date of sale of the Units to such Unit  Holder.  Units
purchased by the same  purchasers  in separate  transactions  during the 60-day
period will be  aggregated  for purposes of  determining  if such  purchaser is
entitled to a Volume  Discount  provided that such  purchaser must own at least
the  lesser of either  (i) the  required  number of Units or (ii) the  required
dollar amount at the Public Offering Price, at the time such  determination  is
made. Units held in the name of the spouse of the purchaser or in the name of a
child of the purchaser under 21 years of age are deemed for the purposes hereof
to be  registered  in the  name  of the  purchaser.  Volume  Discount  is  also
applicable to a trustee or other fiduciary  purchasing  securities for a single
trust estate or single fiduciary account. As a result of such

                                       6
387339.1

<PAGE>



discounts,  units  are sold to  dealers/agents  at  prices  which  represent  a
concession as reflected  below.  The Sponsor reserves the right to change these
discounts from time to time.  The amount of Volume  Discount,  the  approximate
sales charge and the dealer  concession  applicable  to such  purchases  are as
follows:

<TABLE>

<CAPTION>
                                                                Volume Discount     Approximate      Approximate
Lesser of Number of                                               from Public         Reduced        Dealer/Agent
Units or Dollar Amount                         Sales Charge    Offering per Unit   Sales Charge       Concession
- ----------------------                         ------------    -----------------   ------------       ----------
<S>                                                <C>               <C>              <C>               <C>

Treasury Income Series 19
Less than 500,000............................      1.70%              0%              1.70%             1.00%
500,000 to 999,999...........................      1.70%             .15%             1.55%              .95%
1,000,000 and above*.........................      1.70%             .35%             1.35%              .80%
Treasury Income Series 20
Less than 500,000............................      1.80%              0%              1.80%             1.05%
500,000 to 999,999...........................      1.80%             .15%             1.65%             1.00%
1,000,000 and above*.........................      1.80%             .40%             1.40%              .85%
Asset Builder Series 21
Less than 500,000............................      1.80%              0%              1.80%             1.10%
500,000 to 999,999...........................      1.80%             .15%             1.65%             1.00%
1,000,000 and above*.........................      1.80%             .40%             1.40%              .85%


</TABLE>

- --------------

*        For any  transactions of 1,000,000  Units or more or over  $1,000,000,
         the Sponsor intends to negotiate the applicable  sales charge and such
         charge will be disclosed to any such purchaser.

         Units may be  purchased  in the  primary  or  secondary  market at the
Public  Offering  Price  (for  purchases  which  do not  qualify  for a  volume
discount)  less the  concession  the  Sponsor  typically  allows to brokers and
dealers  for  purchases  (see  "Public   Offering-Distribution  of  Units")  by
investors who purchase Units through registered investment advisers,  certified
financial planners and registered broker-dealers who in each case either charge
periodic fees for financial  planning,  investment advisory or asset management
service,  or provide such services in connection with the  establishment  of an
investment account for which a comprehensive "wrap fee" charge is imposed.

         Rollover  Privilege.  In addition,  to the extent Units of each QUILTS
trust are currently available from the Sponsor,  Unit Holders of the Trusts may
elect to rollover  principal  distributions paid to them as Securities in their
respective  Trusts mature into additional units of such available QUILTS trusts
at a reduced sales charge equal to the first  breakpoint of the Trust purchased
described above on the day the rollover is executed.  Reduced sales charges are
available only on proceeds received from principal  distributions from maturing
Securities of the Trust. Furthermore,  for rollover transactions of any amount,
dealers/agents  will receive  concessions  equal to the first breakpoint of the
Trust purchased  described above on the day the rollover is executed.  For more
complete information  concerning the rollover privilege,  including charges and
expenses, the Unit Holders should contact their broker.

         Net Asset  Value  Purchases.  No sales  charge  will be applied to the
following transactions: purchases by persons who for at least 90 days have been
directors,  trustees,  officers or full-time  employees of any of (i) the funds
distributed  by  OCC   Distributors,   (ii)  Op  Cap  Advisors  and  (iii)  OCC
Distributors,  or their  affiliates,  their  immediate  relatives or any trust,
pension, profit sharing or other benefit plan for any of them; purchases by any
account  advised by  Oppenheimer  Capital,  the parent of Op Cap Advisors;  and
purchases by an employee of a broker-dealer having a dealer or servicing

                                       7
387339.1

<PAGE>



agreement  with  OCC  Distributors   and/or  a  participating   member  of  the
Oppenheimer  Capital  brokered  CD  selling  group  or of a bank  or  financial
intermediary currently offering QUILTS to its customers.
         Distribution  of Units.  During the initial  offering period (i) Units
issued on the initial  Date of Deposit and (ii)  Additional  Units issued after
such date in respect of additional deposits of Securities,  will be distributed
by the Sponsor and dealers at the Public Offering Price plus accrued  interest.
The initial  offering period in each case is thirty days unless extended by the
Sponsor  for Units  specified  in (i) and (ii) in the  preceding  sentence.  In
addition,  Units may be  distributed  through  dealers  who are  members of the
National   Association  of  Securities   Dealers,   Inc.  or  other   financial
intermediaries  as permitted by law.  Certain banks and thrifts will make Units
of each Trust available to their customers on an agency basis. A portion of the
sale  charge paid by their  customers  is retained by or remitted to the banks.
Under the  Glass-Steagall  Act, banks are prohibited from  underwriting  Units;
however, the Glass-Steagall Act does permit certain agency transactions and the
banking regulators have indicated that these particular agency transactions are
permitted under such Act. In addition,  state securities laws on this issue may
differ from the  interpretations  of federal law expressed herein and banks and
financial institutions may be required to register as dealers pursuant to state
law.
         The  Sponsor  intends to  qualify  the Units of the Trusts for sale in
Arkansas,  California,   Connecticut,  Florida,  Georgia,  Illinois,  Maryland,
Mississippi,  Nevada, New Jersey, New York, North Carolina, Pennsylvania, South
Carolina,  Tennessee,  Texas,  Virginia,  West  Virginia  and the  District  of
Columbia. Additional states may be added from time to time.

         From time to time the  Sponsor  may  implement  programs  under  which
dealers of a Trust may  receive  nominal  awards  from the  Sponsor for each of
their  registered  representatives  who have sold a minimum number of UIT Units
during a specified time period.  In addition,  at various times the Sponsor may
implement  other  programs  under  which  the  sales  force of a dealer  may be
eligible to win other nominal awards for certain sales efforts,  or under which
the Sponsor will  reallow to any such dealer that  sponsors  sales  contests or
recognition  programs  conforming to criteria  established  by the Sponsor,  or
participates  in  sales  programs  sponsored  by the  Sponsor,  an  amount  not
exceeding the total  applicable  sales  charges on the sales  generated by such
person at the public offering price during such programs. Also, the Sponsor, in
its  discretion,  may  from  time  to  time,  pursuant  to  objective  criteria
established by the Sponsor, pay fees to qualifying dealers for certain services
or activities  which are primarily  intended to result in sales of Units of the
Trusts.  Such  payments are made by the Sponsor out of its own assets,  and not
out of the  assets of a Trust.  These  programs  will not change the price Unit
holders pay for their Units or the amount  that a Trust will  receive  from the
Units sold.

         The Sponsor may provide  additional  concessions  to its affiliates in
connection with the  distribution of the Units.  The Sponsor reserves the right
to  change  the  dealers  concession  at any  time.  Such  Units  may  then  be
distributed  to the public by the dealers at the Public  Offering Price then in
effect.  The Sponsor  reserves  the right to reject,  in whole or in part,  any
order for the purchase of Units.  Also,  the Sponsor in its discretion may from
time to time pursuant to objective criteria established by the Sponsor pay fees
to qualifying Underwriters,  brokers,  dealers, banks and/or others for certain
services or activities which are primarily intended to result in sales of Units
of the Trusts.  Such payments are made by the Sponsor out of its own assets and
out of the assets of the Trusts.  These programs will not change the price Unit
Holders pay for their Units or the amount that each Trust will receive from the
Units sold.

         Sponsor's  Profits.  The  Sponsor  will  receive a gross  underwriting
commission  (although the net commission  retained will be lower because of the
concession  paid to dealers)  equal to 1.70% of the Public  Offering  Price per
Unit  (equivalent to 1.729% of the net amount  invested in the  Securities) for
Treasury  Income  Series  19,  1.80%  of the  Public  Offering  Price  per Unit
(equivalent  to  1.833%  of the net  amount  invested  in the  Securities)  for
Treasury  Income  Series 20 and  1.80% of the  Public  Offering  Price per Unit
(equivalent to 1.833% of the net amount  invested in the  Securities) for Asset
Builder  Series  20.  Additionally,  the  Sponsor  may  realize a profit on the
deposit of the Securities in the Trust  representing the difference between the
cost of the Securities to the Sponsor and the cost of the


                                       8
387339.1

<PAGE>



Securities to the Trusts (see  "Portfolios" in Part A). The Sponsor may realize
profits or sustain  losses with  respect to  Securities  deposited in the Trust
which were acquired from underwriting syndicates of which it was a member.
         The Sponsor may have  participated  as a sole  underwriter or manager,
co-manager  or  member  of  underwriting  syndicates  from  which  some  of the
aggregate  principal  amount of the Securities  were acquired for the Trusts in
the amounts set forth in Part A.
         During  the  initial  offering  period  and  thereafter  to the extent
Additional  Units  continue to be issued and offered for sale to the public the
Sponsor may also realize  profits or sustain losses as a result of fluctuations
after the initial Date of Deposit in the offering  prices of the Securities and
hence in the Public Offering Price received by the Sponsor for the Units. Cash,
if any, made available to the Sponsor prior to settlement date for the purchase
of Units may be used in the Sponsor's business subject to the limitations of 17
CFR 240.15c3-3 under the Securities Exchange Act of 1934, and may be of benefit
to the Sponsor.
         In  maintaining  a  market  for  the  Units  (see  "Liquidity--Sponsor
Repurchase")  the Sponsor will realize  profits or sustain losses in the amount
of any  difference  between  the price at which they buy Units and the price at
which they resell such Units.

         Comparison of Public Offering Price,  Sponsor's  Repurchase  Price and
Redemption  Price.  Although the Public  Offering  Price of Units of the Trusts
will  be  determined  on  the  basis  of the  current  offering  prices  of the
Securities  in the Trusts,  the value at which Units may be redeemed or sold in
the secondary  market will be determined on the basis of the current bid prices
of such Securities.  On the initial Date of Deposit,  the Public Offering Price
and the Sponsor's  Initial  Repurchase Price per Unit of each Trust (each based
on the offering side  evaluation of the Securities in the Trusts) each exceeded
the Redemption Price and the Sponsor's  secondary  market  Repurchase Price per
Unit  (based  upon the current bid side  evaluation  of the  Securities  in the
Trusts) by the amounts shown under "Summary of Essential  Information" for each
Trust in Part A of this  Prospectus.  On the initial  Date of Deposit,  the bid
side  evaluation for each Trust was lower than the offering side evaluation for
such  Trust by the amount set forth in Part A. For this  reason,  among  others
(including  fluctuations  in the market prices of such  Securities and the fact
that the Public  Offering  Price includes the  applicable  sales  charge),  the
amount  realized by a Unit Holder upon any redemption or Sponsor  repurchase of
Units may be less than the price paid for such Units.  See  "Liquidity--Sponsor
Repurchase."

ESTIMATED LONG TERM RETURN AND ESTIMATED CURRENT RETURN


         Units of the Trusts are offered to investors on a "dollar price" basis
(using the  computation  method  previously  described  under "Public  Offering
Price") as  distinguished  from a "yield price" basis  (involving the lesser of
the yield as computed to maturity of bonds or to an earlier  redemption  date).
Since  they are  offered  on a dollar  price  basis,  the rate of  return on an
investment in Units of Treasury  Income Series 19 and Treasury Income Series 20
is measured in terms of "Estimated  Current  Return" and  "Estimated  Long Term
Return."  The rate of return for Asset  Builder  Series 21 is only  measured in
terms of "Estimated  Long Term  Return." This  calculation  of  performance  is
mandated by the rules of the Securities and Exchange Commission.

         Estimated  Long Term Return is calculated by: (1 ) computing the yield
to maturity or to an earlier call date (whichever results in a lower yield) for
each Security in each Trust's portfolio in accordance with accepted  practices,
which practices take into account not only the interest payable on the Security
but also the  amortization  of premiums or accretion of discounts,  if any; (2)
calculating  the  average  of the  yields for the  Securities  in each  Trust's
portfolio by weighing each Security's yield by the market value of the Security
and by the amount of time remaining to the date to which the Security is priced
(thus  creating an average  yield for the  portfolio  of each  Trust);  and (3)
reducing the average  yield for the portfolio of each Trust in order to reflect
estimated  fees and expenses of such Trust and the maximum sales charge paid by
Unit Holders.  The resulting Estimated Long Term Return represents a measure of
the return to Unit Holders earned over the estimated life of the Trusts. The


                                       9
387339.1

<PAGE>



Estimated  Long Term Return as of the day prior to the initial  Date of Deposit
is stated for each Trust under "Summary of Essential Information" in Part A.
         Estimated  Current  Return is computed by dividing the  Estimated  Net
Annual  Interest  Income per Unit by the  Public  Offering  Price per Unit.  In
contrast to the Estimated Long Term Return,  the Estimated  Current Return does
not take into account the amortization of premium or accretion of discount,  if
any,  on the  Securities  in the  portfolio  of each Trust.  Moreover,  because
prevailing  interest  rates on Securities  purchased at a premium are generally
higher than current interest rates on newly issued bonds of a similar type with
comparable  rating,  the  Estimated  Current  Return  per Unit may be  affected
adversely if such  Securities  are  redeemed  prior to their  maturity.  On the
initial Date of Deposit,  the  Estimated  Net Annual  Interest  Income per Unit
divided by the Public  Offering Price resulted in the Estimated  Current Return
stated for the  applicable  Trust under "Summary of Essential  Information"  in
Part A.
         The Estimated Net Annual  Interest  Income per Unit of each Trust will
vary with  changes in the fees and  expenses of the  Trustee and the  Evaluator
applicable  to the  Trust  and with  the  redemption,  maturity,  sale or other
disposition  of the  Securities in such Trust.  The Public  Offering Price will
vary  with  changes  in the  offering  prices  (bid  prices  in the case of the
secondary market) of the Securities.  Therefore, there is no assurance that the
present Estimated Current Return or Estimated Long Term Return will be realized
in the future.

RIGHTS OF UNIT HOLDERS

         Book-Entry  Units.  Ownership  of  Units  of the  Trusts  will  not be
evidenced  by  certificates.  All  evidence of  ownership  of the Units will be
recorded in book-entry form either at Depository  Trust Company ("DTC") through
an  investor's  broker's  account or through  registration  of the Units on the
books of the  Trustee.  Units held through DTC will be deposited by the Sponsor
with DTC in the Sponsor's DTC account and registered in the nominee name CEDE &
CO. Individual  purchases of beneficial ownership interest in the Trust will be
made in book-entry  form through DTC or the Trustee.  Ownership and transfer of
Units  will  be  evidenced  and   accomplished   directly  and   indirectly  by
book-entries  made by DTC and its  participants  if the Units are  evidenced at
DTC, or otherwise will be evidenced and  accomplished by  book-entries  made by
the  Trustee.  DTC will record  ownership  and  transfer of the Units among DTC
participants  and  forward  all  notices  and credit all  payments  received in
respect of the Units held by the DTC  participants.  Beneficial owners of Units
will  receive  written  confirmation  of  their  purchase  and  sale  from  the
broker-dealer or bank from whom their purchase was made. Units are transferable
by making a written  request  properly  accompanied by a written  instrument or
instruments of transfer  which should be sent  registered or certified mail for
the protection of the Unit Holder.  Unit Holders must sign such written request
exactly as their names appear on the record of the Trusts. Such signatures must
be  guaranteed  by a  commercial  bank  or  trust  company,  savings  and  loan
association or by a member firm of a national securities exchange.

         Interest and Principal Distributions.  Interest received by the Trusts
is  credited  by the  Trustee  to an  Interest  Account  for the  Trusts  and a
deduction is made to  reimburse  the Trustee  without  interest for any amounts
previously  advanced.   Proceeds  representing   principal  received  from  the
maturity,  redemption, sale or other disposition of the Securities are credited
to a Principal  Account of the Trust. Cash credited to the Interest Account and
Principal  Account will not be reinvested by the Trusts prior to  distribution.
Such cash  balances  are  maintained  by the Trustee  and any income  generated
thereon inures to the benefit of the Trustee and not the Trusts.
         Distributions  to each  Unit  Holder  from the  Interest  Account  are
computed as of the close of  business  on each  Record  Date for the  following
Payment Date and consist of an amount  substantially  equal to one-quarter (for
quarterly payments) or one-twelfth (for monthly payments) of such Unit Holder's
pro rata share of the  Estimated  Net Annual  Interest  Income in the  Interest
Account  Distributions  from the  Principal  Account of the Trusts  (other than
amounts  representing  failed  contracts,  as  previously  discussed)  will  be
computed as of each quarterly Record Date for Treasury Income Series

                                       10
387339.1

<PAGE>



19 and as of each monthly  Record Date for Treasury  Income Series 20, and will
be made to the Unit Holder of the Trusts on or shortly after the next Quarterly
or Monthly  Payment Date.  Proceeds  representing  principal  received from the
disposition of any of the  Securities  between a Record Date and a Payment Date
which  are not used for  redemptions  of  Units  will be held in the  Principal
Account and not distributed  until the second  succeeding  Quarterly or Monthly
Payment  Date.  Persons who purchase  Units between a Record Date and a Payment
Date will receive  their first  distribution  on the second  Payment Date after
such purchase.

         Normally, interest payments on the Securities in the portfolios of the
Trusts which pay  interest,  are made on a  semi-annual  basis.  Therefore,  it
usually  takes  several  months  after the Date of Deposit  for the  Trustee to
receive  sufficient  interest  payments on the Securities to begin quarterly or
monthly  distributions  of interest to Unit Holders.  However,  the Trustee has
agreed to advance  sufficient funds to the Trusts in order to reduce the amount
of time before  quarterly or monthly  distributions of interest to Unit Holders
commence.  Further, because interest payments are not received by the Trusts at
a constant rate throughout the year, interest distributions may be more or less
than the amount credited to the Interest Account as of a given Record Date. For
the purpose of minimizing  fluctuations in the distributions  from the Interest
Account, the Trustee will advance sufficient funds, without interest, as may be
necessary to provide interest distributions of approximately equal amounts. All
funds in respect of the  Securities  received and held by the Trustee  prior to
distribution  to Unit  Holders may be of benefit to the Trustee and do not bear
interest to Unit Holders.
         In  order  to  acquire  the  "when,  as,  and  if  issued"  Securities
contracted  for by the  Trusts,  if  any,  it  may be  necessary  to pay on the
settlement  dates for  delivery of such  Securities  amounts  covering  accrued
interest on such  Securities  which exceed (1) the amounts paid by Unit Holders
and (2) the  amount  which  will be made  available  under the letter of credit
furnished  by the  Sponsor on the initial  Date of Deposit for the  purchase of
such  Securities.  The Trustee has agreed to pay for any amounts  necessary  to
cover any such excess and will be reimbursed therefor,  without interest,  when
funds become available from interest payments on the particular Securities with
respect to which such payments may have been made.  Also, since interest on the
Securities  in the  portfolios  of the Trusts does not accrue to the benefit of
Unit Holders  until their  respective  dates of delivery,  the Trustee will, in
order to provide  income to the Unit  Holders for this  period of  non-accrual,
reduce  its fee  applicable  to the Trust in an amount  equal to the  amount of
interest that would have so accrued on such Securities in the Trust between the
date of settlement for the Units and such dates of delivery. To the extent such
non-accrual  is in excess of the reduction in the Trustee's  fee, the amount of
such excess will be distributed to Unit Holders as a return of capital.
         As of the first day of each month,  the  Trustee  will deduct from the
Interest  Account of the Trusts,  and, to the extent  funds are not  sufficient
therein, from the Principal Account of the Trusts, amounts necessary to pay the
expenses of the Trusts (see "Trust  Expenses  and Charges" in this Part B). The
Trustee also may withdraw from said accounts such amounts,  if any, as it deems
necessary to establish a reserve for any applicable taxes or other governmental
charges that may be payable out of the Trusts.  Amounts so withdrawn  shall not
be considered a part of the Trusts' assets until such time as the Trustee shall
return  all or any  part  of  such  amounts  to the  appropriate  accounts.  In
addition,  the Trustee may withdraw  from the Interest and  Principal  Accounts
such amounts as may be necessary to cover  purchases of Replacement  Securities
and redemptions of Units by the Trustee.

         The estimated  quarterly  interest  distribution per Unit for Treasury
Income Series 19 and the estimated  monthly interest  distribution per Unit for
Treasury  Income Series 20 will initially be in the amount shown under "Summary
of Essential  Information"  for each Trust in Part A and will change and may be
reduced as Securities mature or are redeemed, exchanged or sold, or as expenses
of the  Trusts  fluctuate.  No  distribution  need be made  from the  Principal
Account until the balance therein is an amount  sufficient to distribute  $1.00
per 1,000 Units.


         Records.  For each of the  Trusts,  the  Trustee  shall  furnish  Unit
Holders in  connection  with each  distribution  a  statement  of the amount of
interest,  if any, and the amount of other  receipts,  if any,  which are being
distributed,  expressed  in each case as a dollar  amount  per  Unit.  Within a
reasonable

                                       11
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<PAGE>



time  after the end of each  calendar  year the  Trustee  will  furnish to each
person who at any time during the calendar year was a Unit Holder of record,  a
statement showing (a) as to the Interest Account:  interest received (including
any earned original issue discount and amounts  representing  interest received
upon any disposition of Securities),  amounts paid for purchases of Replacement
Securities and  redemptions of Units, if any,  deductions for applicable  taxes
and fees and  expenses of the  Trusts,  and the  balance  remaining  after such
distributions and deductions,  expressed both as a total dollar amount and as a
dollar amount  representing  the pro rata share of each Unit outstanding on the
last business day of such calendar year; (b) as to the Principal  Account:  the
dates of disposition of any Securities and the net proceeds received  therefrom
(including  any unearned  original  issue  discount but  excluding  any portion
representing accrued interest), deductions for payments of applicable taxes and
fees and  expenses of the Trusts,  amounts paid for  purchases  of  Replacement
Securities and  redemptions of Units,  if any, and the balance  remaining after
such distributions and deductions,  expressed both as a total dollar amount and
as a dollar amount  representing the pro rata share of each Unit outstanding on
the last business day of such calendar year; (c) a list of the Securities  held
and the number of Units  outstanding  on the last business day of such calendar
year; (d) the Redemption Price per Unit based upon the last computation thereof
made during such calendar  year; and (e) amounts  actually  distributed to Unit
Holders  during such calendar  year from the Interest and  Principal  Accounts,
separately stated, of each Trust, expressed both as total dollar amounts and as
dollar amounts  representing the pro rata share of each Unit outstanding on the
last business day of such calendar year.
         The Trustee shall keep available for inspection by Unit Holders at all
reasonable  times during usual business  hours,  books of record and account of
its  transactions as Trustee,  including  records of the names and addresses of
Unit Holders,  certificates issued or held, a current list of Securities in the
portfolio of each Trust and a copy of the Trust Agreement.

TAX STATUS

         In the opinion of Battle  Fowler LLP,  counsel for the Sponsor,  under
existing law:

                  Each Trust is not an association taxable as a corporation for
         United  States  federal  income tax  purposes and income of the Trusts
         will be treated as income of the Unit  Holders in the manner set forth
         below.  Each Unit  Holder will be  considered  the owner of a pro rata
         portion  of each asset of a Trust  under the  grantor  trust  rules of
         Sections 671-678 of the Internal Revenue Code of 1986, as amended (the
         "Code").
                  Each Unit Holder will be  considered to have received his pro
         rata  share of  interest  derived  from  each  Trust  asset  when such
         interest is  received by the Trust.  Each Unit Holder will be required
         to include in his gross income,  as determined  for Federal income tax
         purposes,  original  issue  discount with respect to his interest in a
         Security  held by the Trust at the same time and in the same manner as
         though the Unit Holder were the direct  owner of such  interest.  Each
         Unit  Holder's  pro rata  share of each  expense  paid by the Trust is
         deductible by the Unit Holder to the same extent as though the expense
         had been paid directly by him.
                  Each Unit Holder will have a taxable event when a Security is
         disposed  of  (whether by sale,  exchange,  redemption,  or payment at
         maturity)  or when the Unit  Holder  redeems or sells his  Units.  The
         total tax cost of each Unit to a Unit Holder must be  allocated  among
         the cash and  Securities  held in the Trust in  accordance  with their
         relative  fair market value on the date the Unit Holder  purchases his
         Units in order to determine his per Unit tax basis for the  Securities
         represented  thereby.  If a Unit  Holder's  tax  cost of his pro  rata
         interest in a Security  exceeds the amount  payable in respect of such
         pro rata interest upon the maturity of the Security,  such excess is a
         "bond  premium"  which may be amortized by the Unit Holder at the Unit
         Holder's election as provided in Section 171 of the Code.


                                       12
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         The tax basis of a Unit  Holder  with  respect  to his  interest  in a
Security  will be increased by the amount of original  issue  discount  thereon
properly  included in the Unit Holder's  gross income as determined for Federal
income tax purposes.
         The amount of gain  recognized by a Unit Holder on a disposition  of a
Security by a Trust will be equal to the difference  between such Unit Holder's
pro rata portion of the gross proceeds realized by the Trust on the disposition
and the Unit  Holder's  tax cost basis in his pro rata  portion of the Security
disposed of. Any gain  recognized  on a sale or exchange of a Unit Holder's pro
rata interest in a Security,  and not  constituting  a  realization  of accrued
"market discount" in the case of a Security issued after July 18, 1984, and any
loss  will be a  capital  gain or  loss,  except  in the  case of a  dealer  or
financial  institution.  Gain realized on the  disposition of the interest of a
Unit Holder in a market discount  Security is treated as ordinary income to the
extent the gain does not exceed the accrued market discount.  A Unit Holder has
an interest in a market discount  Security in a case in which the Unit Holder's
tax cost for his pro rata  interest  in the  Security  is less than the  stated
redemption  price thereof at maturity (or the issue price plus  original  issue
discount  accrued up to the acquisition  date, in the case of an original issue
discount  Security).  If a Unit  Holder has an  interest  in a market  discount
Security and has incurred debt to acquire Units, the deductibility of a portion
of the interest incurred on such debt may be deferred. Any capital gain or loss
arising from the  disposition  of Unit Holder's pro rata interest in a Security
will be a long-term  capital gain or loss if the Unit Holder has held his Units
and the Trust has held the Security for more than one year.  Net capital  gains
(i.e.,  the excess of net long-term  capital gain over net  short-term  capital
loss) of  individuals,  estates and trusts are subject to a maximum nominal tax
rate of 28%. Such net capital gains may,  however,  result in a disallowance of
itemized deductions and/or affect a personal exemption  phase-out.  For taxable
year beginning  after December 31, 1992, net capital gain from the  disposition
of property held for investment is excluded from investment income for purposes
of computing the limitation on the deduction for investment interest applicable
to individuals. A taxpayer may, however, elect to include such net capital gain
in  investment  income if the  taxpayer  reduces the amount of net capital gain
that is otherwise eligible for the maximum 28% rate by such amount.
         If the Unit  Holder  sells or  redeems a Unit for  cash,  he is deemed
thereby to have  disposed of his entire pro rata  interest in all Trust  assets
represented  by the Unit and will have a taxable income or loss measured by the
difference  between his per Unit tax basis for such assets, as described above,
and the amount realized.
         Under the personal  income tax laws of the State and City of New York,
the income of Trust will be treated as the income of the Unit Holders.
         Each Trust may contain one or more  Securities  which were  originally
issued at a discount  ("original issue discount").  In general,  original issue
discount can be defined as the difference between the price at which a Security
was  issued  and its  stated  redemption  price at  maturity.  In the case of a
Security  issued  before  July 2, 1982,  original  issue  discount is deemed to
accrue (be  "earned")  ratably over the period from the date of issuance of the
Security to the date of maturity and is apportioned  among the original  holder
of the  obligation and subsequent  purchasers in accordance  with a ratio,  the
numerator of which is the number of calendar days the  obligation  was owned by
the holder and the  denominator  of which is the total number of calendar  days
from the date of issuance of the  obligation  to its date of maturity.  Gain or
loss upon the disposition of an original issue discount Security is measured by
the difference between the amount realized upon disposition and the amount paid
for such  obligation.  A holder may,  however,  exclude  from gross income that
portion of such gain  attributable to accrued interest and the "earned" portion
of original issue discount.
         In the case of a Security  issued after July 1, 1982,  original  issue
discount is deemed to accrue on a constant  interest method,  which corresponds
in  general  to  the  economic  accrual  of  interest  (adjusted  to  eliminate
proportionately  on an elapsed-time basis any excess of the amount paid for the
Security  over  the sum of the  issue  price  and the  accrued  original  issue
discount on the acquisition  date).  Unit Holders generally will be required to
recognize the accrual of original issue discount as interest  income  currently
even though they will not  receive a  corresponding  amount of cash until later
years.  The tax basis in the  Security is  increased  by the amount of original
issue discount that is deemed to

                                       13
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<PAGE>



accrue while the Security is held. The difference  between the amount  realized
on a disposition of the Security  (excluding accrued interest) and the adjusted
tax  basis of the  Security  will  give  rise to  taxable  gain or loss  upon a
disposition of the Security by the Trust (or a sale or redemption of Units by a
Unit Holder).
         The general rule that requires the holder of a debt instrument  issued
at a  discount  to include  in gross  income on a current  basis the sum of the
daily portions of original  issue discount does not apply to a debt  instrument
that has a fixed  maturity  not more than one year from the date of issue.  For
short-term Government obligations held by a cash method taxpayer, if no special
election  is made  by the  holder,  income  is not  realized  until  the  sale,
maturity, or other disposition of the obligation, and is ordinary income to the
extent the gain  realized  does not exceed an amount equal to the ratable share
of  acquisition  discount.  Gain,  if any, in excess of such amount should be a
short-term  capital  gain.  Acquisition  discount  is the  excess of the stated
redemption  price at maturity of the obligation  over the basis of the taxpayer
in the obligation.  For accrual basis taxpayers and taxpayers  treated for this
purpose as if they use the accrual method (dealers, banks, regulated investment
companies,  common trust funds, and taxpayers engaged in hedging transactions),
acquisition  discount on short-term  Governmental  obligations is includible in
income as it accrues,  on a straight line basis,  unless a special  election is
made.  Limitations  apply to the deductibility of interest on loans incurred to
acquire   short-term   obligations   and  special  rules  apply  to  short-term
obligations that are a stripped bond or stripped coupon.
         A Unit  Holder who is neither a citizen  nor a resident  of the United
States  and is not a  United  States  domestic  corporation  (a  "foreign  Unit
Holder") will not generally be subject to United States  Federal  income tax on
his,  her or its pro rata share of interest and  original  issue  discount on a
Security  held in the Trust or any gain from the sale or other  disposition  of
his,  her or its pro rata  interest  in a  Security  held in the  Trust,  which
interest  or original  issue  discount is not  effectively  connected  with the
conduct by the foreign  Unit  Holder of a trade or  business  within the United
States and which gain is either (i) not from sources  within the United  States
or (ii) not so effectively connected, provided that:

                           (a) with  respect to  interest  and  original  issue
                  discount the Security was issued after July 18, 1984;
                           (b) with respect to any U.S.  source  capital  gain,
                  the foreign Unit Holder (if an  individual) is not present in
                  the  United  States  for 183 days or more  during  his or her
                  taxable year in which the gain was realized and so certifies;
                  and
                           (c) the foreign  Unit Holder  provides  the required
                  certifications regarding (i) his, her or its status and, (ii)
                  in the  case  of  U.S.  source  income,  the  fact  that  the
                  interest,  original issue discount or gain is not effectively
                  connected  with the conduct by the  foreign  Unit Holder of a
                  trade or business within the United States.

         The interest  and/or dividend income received by a foreign Unit Holder
from an entity of which it owns 10% or more of the voting  stock in the case of
a corporation or 10% or more of the profits or capital  interest in the case of
a partnership,  will, however,  be subject to federal income taxation.  Foreign
Unit Holders should consult their own tax counsel with respect to United States
tax consequences of ownership of Units.
         Each Unit Holder  (other than a foreign  Unit Holder who has  properly
provided the  certifications  described above) will be requested to provide the
Unit Holder's taxpayer identification number to the Trustee and to certify that
the Unit  Holder has not been  notified  that  payments  to the Unit Holder are
subject to back-up withholding.  If the taxpayer  identification  number and an
appropriate   certification  are  not  provided  when  requested,  31%  back-up
withholding will apply.
         The foregoing discussion relates only to United States Federal and, to
the extent stated, New York State and City income taxes.
         Investors  should consult their tax counsel for advice with respect to
their own particular tax situations.

                                       14
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         After the end of each calendar  year, the Trustee will furnish to each
Unit Holder an annual statement containing information relating to the interest
received by the Trust on the  Securities,  the gross  proceeds  received by the
Trust from the  disposition  of any  Security  (resulting  from  redemption  or
payment at maturity of any Security or the sale by the Trust of any  Security),
and the fees and  expenses  paid by the Trust.  The Trustee  will also  furnish
required  annual  information  returns to each Unit Holder and to the  Internal
Revenue Service.
         The Sponsor believes that Unit Holders who are individuals  should not
generally be subject to state personal income taxes on the interest  (including
original issue discount)  received  through each Trust.  However,  Unit Holders
(including  individuals) may be subject to state and local taxes on any capital
gains (or market discount  treated as ordinary  income) derived from each Trust
and to other state and local taxes with  respect to the  interest  derived from
each Trust. Moreover, Unit Holders will probably not be entitled to a deduction
for state tax  purposes  for their share of the fees and  expenses  paid by the
Trusts or for any interest on indebtedness  incurred to purchase or carry their
Units.  Even  though the  Sponsor  believes  that  interest  income  (including
original  issue  discount)  received  through  each Trust is exempt  from state
personal  income  taxes on  individuals  in most states,  Unit  Holders  should
consult  their own tax  advisers  with  respect  to state  and  local  taxation
matters.

LIQUIDITY


         Sponsor  Repurchase.  The Sponsor,  although  not  obligated to do so,
currently intends to maintain a secondary market for the Units and continuously
to offer to repurchase the Units.  The Sponsor's  secondary  market  repurchase
price after the initial  public  offering  is  completed,  will be based on the
aggregate bid price of the  Securities in each Trust  portfolio and will be the
same as the redemption price. The aggregate bid price will be determined by the
Evaluator on a daily basis after the initial  public  offering is completed and
computed on the basis set forth under  "Liquidity--Trustee  Redemption." During
the initial  offering period,  the Sponsor's  repurchase price will be based on
the aggregate offering price of the Securities in the Trusts.  Unit Holders who
wish to  dispose of their  Units  should  inquire of the  Sponsor as to current
market  prices  prior to  making a  tender  for  redemption.  The  Sponsor  may
discontinue  repurchase of Units if the supply of Units exceeds demand,  or for
other  business  reasons.  The date of  repurchase  is deemed to be the date on
which  Units  are  received  in  proper  form by OCC  Distributors,  Two  World
Financial Center, 225 Liberty Street,  New York, NY 10281-1698.  Units received
after 4 P.M.,  New York Time,  will be deemed to have been  repurchased  on the
next business  day. In the event a market is not  maintained  for the Units,  a
Unit  Holder  may be able to dispose  of Units  only by  tendering  them to the
Trustee for redemption.
         Units  purchased  by  the  Sponsor  in  the  secondary  market  may be
reoffered  for sale by the Sponsor at a price based on the  aggregate  offering
price of the  Securities in the Trusts plus (a) a 1.70% sales charge (1.729% of
the net amount  invested) plus net accrued  interest for Treasury Income Series
19, (b) a 1.80%  sales  charge  (1.883% of the net  amount  invested)  plus net
accrued  interest  for Treasury  Income  Series 20 and (c) a 1.80% sales charge
(1.833% of the net amount  invested)  plus net accrued  interest  for  Treasury
Income  Series 21. Any Units that are purchased by the Sponsor in the secondary
market also may be redeemed by the Sponsor if it determines  such redemption to
be in its best interest.

         The Sponsor may,  under  certain  circumstances,  as a service to Unit
Holders,  elect to purchase  any Units  tendered to the Trustee for  redemption
(see "Liquidity--Trustee Redemption" in this Part B). Factors which the Sponsor
will consider in making a determination will include the number of Units of all
Trusts which it has in inventory,  its estimate of the  salability and the time
required to sell such Units and general market conditions.  For example,  if in
order to meet redemptions of Units the Trustee must dispose of Securities,  and
if such disposition  cannot be made by the redemption date (seven calendar days
after  tender),  the Sponsor may elect to purchase  such Units.  Such  purchase
shall be made by  payment  to the  Unit  Holder  not  later  than the  close of
business on the redemption  date of an amount equal to the Redemption  Price on
the date of tender.


                                       15
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<PAGE>



         Trustee  Redemption.  Units may also be  tendered  to the  Trustee for
redemption at its corporate  trust office at 770 Broadway,  New York,  New York
10003,  upon proper  delivery of such Units and payment of any relevant tax. At
the  present  time there are no specific  taxes  related to the  redemption  of
Units.  No redemption fee will be charged by the Sponsor or the Trustee.  Units
redeemed by the Trustee will be cancelled.
         Within seven calendar days following a tender for  redemption,  or, if
such  seventh  day is not a  business  day,  on the  first  business  day prior
thereto, the Unit Holder will be entitled to receive in cash an amount for each
Unit  tendered  equal  to the  Redemption  Price  per Unit  computed  as of the
Evaluation  Time set forth under  "Summary of Essential  Information"  for each
Trust in Part A on the date of tender. The "date of tender" is deemed to be the
date on which Units are  received by the  Trustee,  except that with respect to
Units received after the close of trading on the New York Stock  Exchange,  the
date of tender is the next day on which such Exchange is open for trading,  and
such Units will be deemed to have been  tendered to the Trustee on such day for
redemption at the Redemption Price computed on that day.
         Accrued  interest  paid on  redemption  shall  be  withdrawn  from the
Interest  Account,  or,  if the  balance  therein  is  insufficient,  from  the
Principal Account. All other amounts paid on redemption shall be withdrawn from
the Principal Account.  The Trustee is empowered to sell Securities in order to
make funds available for redemptions.  Such sales, if required, could result in
a sale of  Securities by the Trustee at a loss.  To the extent  Securities  are
sold, the size and diversity of such Trust will be reduced.
         The  Redemption  Price per Unit is the pro rata  share of each Unit in
each Trust  determined  by the  Trustee on the basis of (i) the cash on hand in
the Trust or moneys in the  process of being  collected,  (ii) the value of the
Securities  in the Trust based on the bid prices of such  Securities  and (iii)
interest  accrued  thereon,  less  (a)  amounts  representing  taxes  or  other
governmental  charges  payable out of each Trust,  (b) the accrued  expenses of
such  Trust and (c) cash  allocated  for the  distribution  to Unit  Holders of
record as of the business day prior to the evaluation being made. The Evaluator
may  determine  the value of the  Securities  in each Trust (1) on the basis of
current  bid prices of the  Securities  obtained  from  dealers or brokers  who
customarily  deal in bonds  comparable to those held by the Trusts,  (2) on the
basis of bid prices for bonds comparable to any Securities for which bid prices
are not available, (3) by determining the value of the Securities by appraisal,
or (4) by any  combination  of the above.  The  Evaluator  will  determine  the
aggregate current bid price evaluation of the Securities in each Trust,  taking
into account the market value of the Securities in the manner  described as set
forth under "Public Offering--Offering Price."
         The  Trustee  is  irrevocably  authorized  in its  discretion,  if the
Sponsor  does not elect to purchase a Unit  tendered for  redemption  or if the
Sponsor tenders a Unit or Units for redemption, in lieu of redeeming such Unit,
to sell  such  Unit in the  over-the-counter  market  for  the  account  of the
tendering  Unit Holder at prices which will return to the Unit Holder an amount
in cash, net after deducting  brokerage  commissions,  transfer taxes and other
charges,  equal to or in excess of the  Redemption  Price  for such  Unit.  The
Trustee  will pay the net  proceeds  of any such sale to the Unit Holder on the
day he would otherwise be entitled to receive payment of the Redemption Price.
         The Trustee  reserves the right to suspend the right of redemption and
to postpone the date of payment of the Redemption Price per Unit for any period
during  which the New York  Stock  Exchange  is closed,  other  than  customary
weekend and holiday  closings,  or trading on that  Exchange is  restricted  or
during which (as  determined  by the  Securities  and Exchange  Commission)  an
emergency  exists as a result of which disposal or evaluation of the Securities
is not reasonably practicable,  or for such other periods as the Securities and
Exchange  Commission  may by order permit.  The Trustee and the Sponsor are not
liable to any person or in any way for any loss or damage which may result from
any such suspension or postponement.
         A Unit Holder who wishes to dispose of his Units should inquire of his
bank or broker in order to  determine  if there is a current  secondary  market
price in excess of the Redemption Price.


                                       16
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<PAGE>



RETIREMENT PLANS

         The Trusts may be an appropriate  investment for retirement plans such
as IRAs,  self-employed  retirement  plans  (formerly  Keogh  Plans),  pension,
profit-sharing plans and other qualified retirement plans.
         Generally,  capital  gains  and  income  received  under  each  of the
foregoing plans are deferred from Federal taxation. All distributions from such
plans are  generally  treated as ordinary  income but may,  in some  cases,  be
eligible for special  income  averaging  or  tax-deferred  rollover  treatment.
Investors considering participation in any such plan should review specific tax
laws related  thereto and should  consult their  attorneys or tax advisers with
respect to the  establishment  and maintenance of any such plan. Such plans are
offered by brokerage firms and other financial  institutions.  Fees and charges
with respect to such plans may vary.
         Individual  Retirement  Account--IRA.  Any individual under age 70 1/2
may  contribute  the  lesser  of  $2,000  or  100% of  compensation  to any IRA
annually. Such contributions are fully deductible if the individual (and spouse
if filing jointly) is not covered by a retirement plan at work.
         A  participant's  interest  in an IRA  must  be,  or  commence  to be,
distributed  to the  participant  not later than April 1 of the  calendar  year
following  the  year  during  which  the   participant   attains  age  70  1/2.
Distributions  made before  attainment of age 59 1/2, except in the case of the
participant's  death or  disability,  or where the amount  distributed is to be
rolled over to another IRA, or where the distributions are taken as a series of
substantially  equal  periodic  payments  over the  participant's  life or life
expectancy (or the joint lives or life  expectancies of the participant and the
designated beneficiary) are generally subject to a surtax in an amount equal to
10% of the  distribution.  The  amount  of such  periodic  payments  may not be
modified before the later of five years or attainment of age 59 1/2.
Excess contributions are subject to an annual 6% excise tax.
         IRA  applications  disclosure  statements  and  trust  agreements  are
available from the Sponsor upon request.

         Qualified  Retirement  Plans.  Units of each Trust may be purchased by
qualified   pension  or  profit  sharing  plans   maintained  by  corporations,
partnerships  or  sole  proprietors.  The  maximum  annual  contribution  for a
participant  in a money  purchase  pension plan or to paired profit sharing and
pension plans is the lesser of 25% of compensation  or $30,000.  Prototype plan
documents for  establishing  qualified  retirement plans are available from the
Sponsor upon  request.  The latest date by which a  participant  must  commence
receiving  benefits  from a plan is  generally  the same as for an IRA. The 10%
early  distribution  surtax also applies,  except that  distributions  received
after age 55 or as a result  of a  separation  of  service,  and  distributions
received to pay deductible  medical expenses or pursuant to qualified  domestic
relations order are not subject to the tax.

         Excess Distributions Tax. In addition to the other taxes due by reason
of  a  plan  distribution,  a  tax  of  15%  may  apply  to  certain  aggregate
distributions  from IRAs,  Keogh Plans,  and corporate  retirement plans to the
extent such aggregate taxable distributions exceed specified amounts (generally
$150,000,  as  adjusted  during a tax  year).  This  15% tax will not  apply to
distributions  on account of death,  qualified  domestic  relations order or to
eligible  distributions that are rolled over to an IRA or other qualified plan.
In general,  for lump sum distributions  the excess  distribution over $750,000
(as adjusted) will be subject to the 15% tax.

TRUST ADMINISTRATION

         Portfolio   Supervision.   Except  for  the  purchase  of  Replacement
Securities,  Additional  Securities or, as discussed herein, the acquisition of
any Securities for the Trust other than Securities  initially  deposited by the
Sponsor  is  prohibited.  The  Sponsor  may  direct  the  Trustee to dispose of
Securities  upon (i)  default in  payment  of  principal  or  interest  on such
Securities, (ii) default under other documents adversely affecting debt service
on such Securities, or (iii) decline in price or the occurrence of other

                                       17
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<PAGE>



market or credit  factors  that in the  opinion of the  Sponsor  would make the
retention of such Securities in the Trusts  detrimental to the interests of the
Unit  Holders.  If a default in the payment of  principal or interest on any of
the Securities  occurs and if the Sponsor fails to instruct the Trustee to sell
or hold such Securities, the Trust Agreement provides that the Trustee may sell
such  Securities.  The Trustee shall not be liable for any depreciation or loss
by reason of any sale of  Securities or by reason of the failure of the Sponsor
to give directions to the Trustee. An affiliate of the Sponsor, Quest For Value
Advisors,  will perform the  portfolio  supervisory  functions  noted herein on
behalf of the Sponsor and receive the Annual Supervisory Fee noted in Part A.
         The Sponsor is authorized by the Trust Agreement to direct the Trustee
to accept or reject  certain plans for the refunding or  refinancing  of any of
the Securities.  Any bonds received in exchange or substitution will be held by
the Trustee  subject to the terms and  conditions  of the Agreement to the same
extent as the  Securities  originally  deposited.  Within  five days after such
deposit,  notice of such  exchange and deposit shall be given by the Trustee to
each  Unit  Holder  registered  on the  books  of  the  Trustee,  including  an
identification  of the Securities  eliminated  and the  Securities  substituted
therefor.

         Trust Agreement, Amendment and Termination. The Trust Agreement may be
amended by the Trustee the Sponsor and the Evaluator without the consent of any
of the Unit Holders:  (1) to cure any ambiguity or to correct or supplement any
provision which may be defective or  inconsistent;  (2) to change any provision
thereof as may be required by the  Securities  and Exchange  Commission  or any
successor  governmental  agency; or (3) to make such other provisions in regard
to matters  arising  thereunder as shall not adversely  affect the interests of
the Unit Holders.
         The Trust Agreement may also be amended in any respect, or performance
of any of the  provisions  thereof may be waived,  with the consent of the Unit
Holders  owning  662/3%  of the  Units  then  outstanding  for the  purpose  of
modifying the rights of Unit Holders; provided that no such amendment or waiver
shall  reduce any Unit  Holder's  interest  in a Trust  without  his consent or
reduce the  percentage  of Units  required to consent to any such  amendment or
waiver  without the consent of Unit  Holders.  The Trust  Agreement  may not be
amended, without the consent of all Unit Holders then outstanding,  to increase
the number of Units issuable or to permit the  acquisition of any securities in
addition to or in substitution for those initially  deposited in the Trusts, or
to provide  the  Trustee  with the power to engage in  business  or  investment
activities not specifically  authorized in the Indenture as originally  adopted
or so as to adversely affect the characterization of a Trust as a grantor trust
for federal  income tax purposes,  except in accordance  with the provisions of
the Trust  Agreement.  The  Trustee  shall  promptly  notify Unit  Holders,  in
writing, of the substance of any such amendment.
         The Trust  Agreement  provides that the Trust shall terminate upon the
maturity,  redemption or other disposition,  as the case may be, of the last of
the Securities  held in the Trust but in no event is it to continue  beyond the
end of the calendar year preceding the fiftieth anniversary of the execution of
the Trust  Agreement.  If the value of a Trust  shall be less than the  minimum
amount  set forth  under  "Summary  of  Essential  Information"  in Part A, the
Trustee  may, in its  discretion,  and shall when so  directed by the  Sponsor,
terminate  the Trusts.  The Trust may also be  terminated  at any time with the
consent of the Unit Holders representing 100% of the Units then outstanding. In
the event of termination, written notice thereof will be sent by the Trustee to
all Unit Holders.  Within a reasonable  period after  termination,  the Trustee
must sell any Securities  remaining in the terminated  Trust, and, after paying
all expenses and charges incurred by the Trust, distribute to each Unit Holder,
upon  surrender  for  cancellation  of his  Units,  his pro  rata  share of the
Interest and Principal Accounts.
         Alternatively,  upon the  termination  of the Trust and  further  upon
receipt by the Trust, and subject to the conditions of an appropriate exemptive
order from the Securities and Exchange Commission,  each Unit Holder's pro rata
share of the net asset  value of the Trust will  automatically  be  invested on
behalf of each Unit  Holder in a mutual fund which  invests in U.S.  government
securities (the  "Reinvestment  Fund"). A copy of the current Prospectus of the
Reinvestment  Fund will be  delivered to Unit Holders at least 30 days prior to
the time  reinvestment is made. At any time prior to the time of  reinvestment,
Unit Holders may elect not to invest in the  Reinvestment  Fund, in which case,
their  pro  rata  share of  liquidation  proceeds  will be sent to  them.  This
investment in the Reinvestment

                                       18
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<PAGE>




Fund will not prevent Unit Holders from  recognizing  taxable gain or loss as a
result of the liquidation of the Trust, even though no cash will be distributed
to Unit Holders to pay any taxes.  However,  Unit Holders may redeem any shares
in the  Reinvestment  Fund in order to generate  cash to pay these taxes.  Unit
Holders should consult their own tax advisers regarding this matter.

         The Sponsor.  Effective as of November 28, 1995 the Sponsor, Quest for
Value  Distributors,  changed  its name to OCC  Distributors.  The Sponsor is a
majority-owned  subsidiary  of  Oppenheimer  Capital.  Since 1969,  Oppenheimer
Capital  has  managed  assets for many of the  nation's  largest  pension  plan
clients.  Today,  the firm has over $40 billion under  management from separate
accounts and money market funds.  The Quest for Value  organization was created
in 1988 to introduce mutual funds designed to help individual investors achieve
their financial goals. OCC Distributors is committed to retirement planning and
services geared to the long term investment  goals of the individual  investor.
The  Sponsor,  a Delaware  general  partnership,  is engaged in the mutual fund
distribution business. It is a member of the National Association of Securities
Dealers, Inc.

         The  information  included herein is only for the purpose of informing
investors as to the financial  responsibility of the Sponsor and its ability to
carry out its contractual obligations.
         The Sponsor is liable for the performance of its  obligations  arising
from its  responsibilities  under  the  Trust  Agreement,  but will be under no
liability to Unit Holders for taking any action,  or refraining from taking any
action,  in good  faith  pursuant  to the  Trust  Agreement,  or for  errors in
judgment except in cases of its own willful misfeasance,  bad faith, negligence
or reckless disregard of its obligations and duties.
         The  Sponsor  may resign at any time by  delivering  to the Trustee an
instrument of resignation  executed by the Sponsor.  If at any time the Sponsor
shall resign or fail to perform any of its duties under the Trust  Agreement or
becomes  incapable of acting or becomes  bankrupt or its affairs are taken over
by public  authorities,  then the  Trustee  may either (a)  appoint a successor
Sponsor;  (b)  terminate the Trust  Agreement and liquidate the Trusts;  or (c)
continue  to act as  Trustee  without  terminating  the  Trust  Agreement.  Any
successor sponsor appointed by the Trustee shall be satisfactory to the Trustee
and, at the time of appointment, shall have a net worth of at least $1,000,000.

         The  Trustee.  The  Trustee  is The  Chase  Manhattan  Bank,  with its
principal executive office located at 270 Park Avenue, New York, New York 10017
and its unit investment trust office at 770 Broadway,  New York, New York 10003
(800) 428-8890. The Trustee is subject to the supervision by the Superintendent
of Banks of the State of New York, the Federal  Deposit  Insurance  Corporation
and the Board of Governors of the Federal Reserve System.

         The Trustee shall not be liable or  responsible  in any way for taking
any action, or for refraining from taking any action, in good faith pursuant to
the Trust  Agreement,  or for errors in judgment;  or for an disposition of any
moneys,  Securities or  Certificates  in accordance  with the Trust  Agreement,
except  in  case of its own  willful  misfeasance,  bad  faith,  negligence  or
reckless  disregard of its  obligations  and duties.  In addition,  the Trustee
shall not be liable for any taxes or other governmental charges imposed upon or
in respect of the  Securities  or the Trusts  which it may be  required  to pay
under current or future law of the United States or any other taxing  authority
having  jurisdiction.  The Trustee shall not be liable for depreciation or loss
incurred by reason of the sale by the Trustee of any of the Securities pursuant
to the Trust Agreement
         For  further  information  relating  to  the  responsibilities  of the
Trustee under the Trust Agreement,  reference is made to the material set forth
under "Rights of Unit Holders."
         The  Trustee  may resign by  executing  an  instrument  in writing and
filing the same with the Sponsor, and mailing a copy of a notice of resignation
to all Unit  Holders.  In such an event the Sponsor is  obligated  to appoint a
successor  Trustee as soon as  possible.  In addition,  if the Trustee  becomes
incapable of acting or becomes bankrupt or its affairs are taken over by public
authorities,  the Sponsor  may remove the  Trustee  and appoint a successor  as
provided in the Trust Agreement.  Notice of such removal and appointment  shall
be mailed  to each  Unit  Holder by the  Sponsor.  If upon  resignation  of the
Trustee no successor has been appointed and has accepted the appointment within
thirty days after

                                       19
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<PAGE>



notification,   the  retiring  Trustee  may  apply  to  a  court  of  competent
jurisdiction for the appointment of a successor.  The resignation or removal of
the Trustee  becomes  effective  only when the  successor  Trustee  accepts its
appointment  as such  or when a court  of  competent  jurisdiction  appoints  a
successor  Trustee.  Upon execution of a written acceptance of such appointment
by such successor Trustee,  all the rights,  powers,  duties and obligations of
the original Trustee shall vest in the successor.
         Any corporation  into which the Trustee may be merged or with which it
may  be  consolidated,   or  an  corporation   resulting  from  any  merger  or
consolidation  to which the Trustee  shall be a party,  shall be the  successor
Trustee.  The Trustee must always be a banking corporation  organized under the
laws of the  United  States or any  State  and have at all  times an  aggregate
capital, surplus and undivided profits of not less than $2,500,000.

TRUST EXPENSES AND CHARGES

         All or a portion of the expenses incurred in creating and establishing
the Trusts,  including the cost of the initial preparation and execution of the
Trust Agreement,  registration of the Trusts and the Units under the Investment
Company Act of 1940 and the Securities Act of 1933, blue sky registration fees,
the initial fees and expenses of the Trustee,  legal  expenses and other actual
out-of-pocket  expenses, will be paid by the Trusts and amortized over the life
of each of the Trusts or five years,  whichever is shorter. All advertising and
selling  expenses,  as  well as any  organizational  expenses  not  paid by the
Trusts, will be borne by the Sponsor at no cost to the Trusts.
         The Sponsor will not charge the Trusts a fee for its services as such.
         The  Sponsor's  affiliate  will  receive  for  portfolio   supervisory
services to the Trusts an annual fee in the amount set forth under  "Summary of
Essential  Information"  for each Trust in Part A. The Sponsor's fee may exceed
the actual cost of providing portfolio supervisory services for the Trusts, but
at no time will the total amount  received for portfolio  supervisory  services
rendered to all series of the Qualified Unit Investment  Liquid Trust Series in
any calendar  year exceed the aggregate  cost to the Sponsor of supplying  such
services in such year. (See "Trust Administration--Portfolio Supervision.")
         The Trustee's  annual fee and  estimated  expenses are set forth under
"Summary of Essential  Information"  for each Trust in Part A. For a discussion
of the services  performed by the Trustee pursuant to its obligations under the
Trust Agreement, see "Trust Administration" and "Rights of Unit Holders."
         The Trustee's fees applicable to the Trusts are calculated  based upon
the  principal  amount of  Securities  in the Trusts on the Record Date of such
month,  payable monthly as of the Record Date from the Interest  Account of the
Trusts to the extent funds are available  and then from the Principal  Account.
Both  the  supervisory  fee and the  Trustee's  fee  may be  increased  without
approval of the Unit Holders by amounts not exceeding  proportionate  increases
in consumer prices for services as measured by the United States  Department of
Labor's Consumer Price Index entitled "All Services Less Rent."
         The following additional charges are or may be incurred by the Trusts:
all expenses (including counsel fees) of the Trustee incurred and advances made
in connection  with its  activities  under the Trust  Agreement,  including the
expenses  and costs of any action  undertaken  by the  Trustee  to protect  the
Trusts and the rights and  interests of the Unit  Holders;  fees of the Trustee
for  any   extraordinary   services   performed  under  the  Trust   Agreement;
indemnification of the Trustee for any loss or liability accruing to it without
negligence,  bad faith or willful  misconduct on its part, arising out of or in
connection with its acceptance or administration of the Trusts; indemnification
of the Sponsor for any losses,  liabilities and expenses  incurred in acting as
sponsors of the Trusts without  negligence,  bad faith or willful misconduct on
its  part;  and all  taxes  and other  governmental  charges  imposed  upon the
Securities  or any part of the  Trusts  (no such  taxes or  charges  are  being
levied,  made or, to the  knowledge  of the Sponsor,  contemplated).  The above
expenses,  including the Trustee's  fees,  when paid by or owing to the Trustee
are secured by a first lien on the Trusts to which such  expenses  are charged.
In addition, the Trustee is empowered to sell Securities in order to make funds
available to pay all expenses.

                                       20
387339.1

<PAGE>



         The accounts of the Trusts shall be audited not less than  annually by
independent  public  accountants  selected by the Sponsor.  The expenses of the
audit  shall be an expense of the Trust.  So long as the  Sponsor  maintains  a
secondary  market,  the Sponsor will bear any audit  expense  which  exceeds 50
Cents per 1,000 Units.  Unit  Holders  covered by the audit during the year may
receive a copy of the audited financial upon request.

OTHER MATTERS

         Legal  Opinions.  The legality of the Units offered hereby and certain
matters relating to federal tax law have been passed upon by Battle Fowler LLP,
75 East 55th  Street,  New York,  New York  10022 as counsel  for the  Sponsor.
Carter, Ledyard & Milburn, Two Wall Street, New York, New York 10005 have acted
as counsel for the Trustee.


         Independent  Auditors.  The Statements of Condition and Portfolios are
included  herein in reliance upon the report of BDO Seidman,  LLP,  independent
auditors,  and upon the  authority  of said firm as experts in  accounting  and
auditing.



                                       21
387339.1

<PAGE>


            Qualified Unit Investment Liquid Trust Series ("QUILTS")

                           (A Unit Investment Trust)


                     QUILTS Income--U.S. Treasury Series 19
                     QUILTS Income--U.S. Treasury Series 20
                 QUILTS Asset Builder--U.S. Treasury Series 21


                        Prospectus Dated: July 24, 1996


Sponsor:                                               Trustee and Evaluator:
OCC Distributors                                       The Chase Manhattan Bank
Two World Financial Center                             770 Broadway
225 Liberty Street                                     New York, New York  10003
New York, New York  10281-1698                         (800) 428-8890
(800) 628-6664



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


                               Table of Contents
Title                                                                    Page

         PART A
Summary of Essential Information.........................................A-2
Independent Auditors' Report............................................A-14
Statements of Condition.................................................A-15
Portfolio and Cash Flow Information.....................................A-16
Underwriting ...........................................................A-19
         PART B
The Trust..................................................................1
Risk Factors...............................................................3
Public Offering............................................................5
Estimated Long Term Return and
  Estimated Current Return.................................................9
Rights of Unit Holders ...................................................10
Tax Status................................................................12
Liquidity.................................................................15
Retirement Plans..........................................................17
Trust Administration......................................................17
Trust Expenses and Charges................................................20
Other Matters.............................................................21

         No  person  is  authorized  to give  any  information  or to make  any
representations  not  contained  in Parts A and B of this  Prospectus;  and any
information or  representation  not contained herein must not be relied upon as
having  been  authorized  by the Trust,  the  Trustee,  the  Evaluator,  or the
Sponsor.  The  Trust  is a  registered  as  unit  investment  trust  under  the
Investment Company Act of 1940. Such registration does not imply that the Trust
or any of its Units have been guaranteed, sponsored, recommended or approved by
the United States or any state or any agency or officer thereof.
         This   Prospectus   does  not  constitute  an  offer  to  sell,  or  a
solicitation of an offer to buy,  securities in any state to any person to whom
it is not lawful to make such offer in such state.
         Parts A and B of this Prospectus do not contain all of the information
set forth in the registration  statement and exhibits  thereto,  filed with the
Securities and Exchange Commission,  Washington, D.C., under the Securities Act
of 1933,  and the  Investment  Company Act of 1940,  and to which  reference is
made.


387339.1


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