Libraries w/ Jewish-music collections

[ChinseG <ChinseG...>]

Yidn!
        I live in New York City and am looking for a library with a sizeable 
amount
of Jewish-music in sheet-music format.  Besides the Jewish Book Center (which
is a block away from me, and not a library) and the Performing Arts Library
at Lincoln Center, which has less Jewish music in its collection than I would
like, I don't know of any other libraries in the area with a large
collection.
        I am told the Gratz College library in Philadelphia has a good 
collection of
Jewish music, but apart from my going down there, what can any of you
recommend in the way of a library in NYC?  I have to learn a good deal of
repertoire for an upcoming vocal gig and would like to be fully prepared.
        A shainen dank to all who can help.

--Barak Tulin