[GRAPHIC OMITTED][GRAPHIC OMITTED]

                                                                   P.O. Box 2600
                                                     Valley Forge, PA 19482-2600

                                                                    610-503-5693
                                                      Natalie_S_Bej@vanguard.com


September 20, 2007



U.S. Securities & Exchange Commission
100 F Street, N.E.
Washington, DC 20549



RE:     Vanguard Montgomery Funds (the "Trust")
        File Number 333-145624

Commissioners:

Enclosed  for  filing  under  the  Securities  Act  of  1933,  as  amended  (the
"Securities Act"), is Pre-Effective  Amendment No. 1 to the Trust's Registration
Statement on Form N-14 ("Amendment No. 1"). The purpose of Amendment No. 1 is to
respond to comments  provided by Commission  staff to the initial  filing of the
Registration  Statement on August 22, 2007, and to make other minor changes. THE
TRUST HEREBY REQUESTS THAT THE COMMISSION  DECLARE  AMENDMENT NO. 1 EFFECTIVE AT
9:00 A.M. ON SEPTEMBER 24, 2007 OR AS SOON THEREAFTER AS POSSIBLE.

No filing fee is payable herewith because the Trust is registering an indefinite
amount of shares  pursuant  to Rule 24f-2  under the  Investment  Company Act of
1940.  Moreover,  a fee in connection with the preliminary proxy statement filed
as part of the Registration  Statement is not required pursuant to Rule 14a-6(j)
under the Securities Exchange Act of 1934.

The Trust and its distributor,  Vanguard Marketing Corporation, have by separate
letter  requested,  pursuant  to Rule  461(a)  under the  Securities  Act,  that
Amendment No. 1 be  accelerated  to an effective date of September 24, 2007. The
request for acceleration is attached to this letter as Appendix A.

We hope the staff finds the  revisions  in  Amendment  No. 1  responsive  to the
staff's  comments on the initial filing of the  Registration  Statement.  Please
contact me at (610) 503 5693 with any questions.

Sincerely,


Natalie S. Bej
Senior Counsel

Enclosures
cc:      Christian Sandoe, Esq.
         Securities and Exchange Commission










                                   APPENDIX A

                           461(a) Acceleration Request



September 20, 2007



U.S. Securities & Exchange Commission
100 F Street, N.E.
Washington, DC 20549



RE:     Vanguard Montgomery Funds--461(a) Request
        for Acceleration of Effectiveness
        File Number 333-145624



Commissioners:

Pursuant to Rule 461(a) under the  Securities Act of 1933,  Vanguard  Montgomery
Funds  (the  "Trust")  and  its  distributor,  Vanguard  Marketing  Corporation,
respectfully request that the effectiveness of Pre-Effective  Amendment No. 1 of
the  Trust's  registration  statement  on Form N-14 be  accelerated  to  Monday,
September  24, 2007.  Pre-Effective  Amendment  No. 1 addresses  comments of the
Commission's staff regarding the initial filing of Form N-14, and has been filed
today, September 20, 2007.


Sincerely,


VANGUARD MONTGOMERY FUNDS



----------------------------------
Name: John J. Brennan (Heidi Stam)*
Title: President


VANGUARD MARKETING CORPORATION, Distributor



----------------------------------
Name: Michael Kimmel
Title: Secretary


cc: Christian Sandoe, Esq.
    U.S. Securities and Exchange Commission