I have found that here in Israel many university libraries have the JC on microfilm, It has proved most usefull to me. I am sure that this must also be the case in the U. S.
I believe you are referring to the main New York Public Library and the Jewish Room on the first floor. Remember the library is no longer open on Mondays.
Diane Jacobs New York
The Jewish Chronicle can be found at the NYC library on 5th and 41st in