UNITED STATES
                       SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549

                                 Schedule 13D/A
                    Under the Securities Exchange Act of 1934
                               (Amendment No. 3)*


                Putnam New York Investment Grade Municipal Trust
                                (Name of Issuer)

                                  Common Stock
                         (Title of Class of Securities)

                                    746921105
                                 (CUSIP Number)

                             Stephen C. Miller, Esq.
                            Joel L. Terwilliger, Esq.
                           2344 Spruce Street, Suite A
                             Boulder, Colorado 80302
                                 (303) 442-2156
           (Name, Address and Telephone Number of Person Authorized to
                       Receive Notices and Communications)

                                 April 17, 2007
             (Date of Event which Requires Filing of this Statement)



If the filing person has previously  filed a statement on Schedule 13G to report
the  acquisition  that is the subject of this  Schedule  13D, and is filing this
schedule because of Sections 240.13d-1(e),  240.13d-1(f) or 240.13d-1(g),  check
the following box.

Note:  Schedules  filed in paper format shall include a signed original and five
copies of the schedule,  including all exhibits. See Section 240.13d-7 for other
parties to whom copies are to be sent.

* The remainder of this cover page shall be filled out for a reporting  person's
initial filing on this form with respect to the subject class of securities, and
for  any  subsequent   amendment   containing   information  which  would  alter
disclosures provided in a prior cover page.

The information required on the remainder of this cover page shall not be deemed
to be "filed" for the purpose of Section 18 of the  Securities  Exchange  Act of
1934 ("Act") or otherwise  subject to the liabilities of that section of the Act
but  shall be  subject  to all other  provisions  of the Act  (however,  see the
Notes).




CUSIP No. 746921105
--------------------------------------------------------------------------------

1. Names of Reporting Persons.
   I.R.S. Identification Nos. of above persons (entities only).

   Mildred B. Horejsi Trust

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

2. Check the Appropriate Box if a Member of a Group (See Instructions)
         (a)
         (b)

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

3. SEC Use Only

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

4. Source of Funds (See Instructions)   WC OO

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

5. Check if Disclosure of Legal Proceedings Is Required Pursuant to Items 2(d)
or 2(e)

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6. Citizenship or Place of Organization    Alaska

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

Number of         7.       Sole Voting Power         380,263
Shares Bene-
ficially Owned    8.       Shared Voting Power       0
by Each
Reporting         9.       Sole Dispositive Power    380,263
Person With
                  10.      Shared Dispositive Power  0

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

11. Aggregate Amount Beneficially Owned by Each Reporting Person 380,263

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

12. Check if the Aggregate Amount in Row (11) Excludes Certain Shares (See
Instructions)

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

13. Percent of Class Reported by Amount in Row (11)      13.67%

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

14. Type of Reporting Person (See Instructions)     OO



CUSIP No. 746921105
--------------------------------------------------------------------------------

1. Names of Reporting Persons.
   I.R.S. Identification Nos. of above persons (entities only).

   Lola Brown Trust No. 1B

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

2.  Check the Appropriate Box if a Member of a Group (See Instructions)
         (a)
         (b)

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

3. SEC Use Only

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

4. Source of Funds (See Instructions) WC OO

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

5. Check if Disclosure of Legal Proceedings Is Required Pursuant to Items 2(d)
or 2(e)

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

6. Citizenship or Place of Organization Alaska

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

Number of         7.       Sole Voting Power         151,000
Shares Bene-
ficially Owned    8.       Shared Voting Power       0
by Each
Reporting         9.       Sole Dispositive Power    151,000
Person With
                  10.      Shared Dispositive Power  0

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

11. Aggregate Amount Beneficially Owned by Each Reporting Person    151,000

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

12. Check if the Aggregate Amount in Row (11) Excludes Certain Shares (See
Instructions)

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

13. Percent of Class Reported by Amount in Row (11)       5.43%

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

14. Type of Reporting Person (See Instructions)      OO





CUSIP No. 746921105

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

1. Names of Reporting Persons.
   I.R.S. Identification Nos. of above persons (entities only).

   Stewart R. Horejsi

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

2. Check the Appropriate Box if a Member of a Group (See Instructions)
         (a)
         (b)

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

3. SEC Use Only

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

4. Source of Funds (See Instructions)    Not applicable

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

5. Check if Disclosure of Legal Proceedings Is Required Pursuant to Items 2(d)
or 2(e)

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

6. Citizenship or Place of Organization    United States

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

Number of         7.       Sole Voting Power         0
Shares Bene-
ficially Owned    8.       Shared Voting Power       0
by Each
Reporting         9.       Sole Dispositive Power    0
Person With
                  10.      Shared Dispositive Power  0

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

11. Aggregate Amount Beneficially Owned by Each Reporting Person         0

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

12. Check if the Aggregate Amount in Row (11) Excludes Certain Shares (See
Instructions)

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

13. Percent of Class Reported by Amount in Row (11)      0%

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

14. Type of Reporting Person (See Instructions)      IN






                  Amendment No. 3 to Statement on Schedule 13D

     This third  amended  statement  on Schedule 13D relates to the Common Stock
(the  "Shares")  of  Putnam  New  York  Investment   Grade  Municipal  Trust,  a
Massachusetts  business  trust  (the  "Company").  Item  4  of  this  statement,
previously  filed by (i) the Mildred B. Horejsi Trust (the  "Mildred  Trust") as
the  direct   beneficial   owner  of  Shares  and  (ii)  by  virtue  of  certain
relationships  and as  previously  described in  Amendments  No. 1 and 2 to this
statement, by Stewart R. Horejsi, are hereby amended as set forth below.

Item 4. Purpose of Transaction

     No change except for the addition of the following:

     Following discussions with a representative of the Board of Trustees of the
Company (the  "Trustees")  in  connection  with the  structure  and terms of the
Trustees'  proposal  to merge  the  Company  into a Putnam  open-end  fund,  the
Reporting  Persons  have advised the Company that they will vote in favor of the
Trustees' proposal if a formal proposal and proxy statement is issued consistent
with the terms described in the press release issued by the Company on April 13,
2007.





                                    Signature

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

Date:    April 17, 2007


/s/ Stewart R. Horejsi
Stewart R. Horejsi

/s/ Stephen C. Miller
Stephen C. Miller as President of Badlands Trust
Company, LLC, an Alaska-domiciled limited liability
company, private trust company, and administrative
trustee for the Mildred B. Horejsi Trust and the
Lola Brown Trust No. 1B