The New York City Municipal Archives, 31 Chambers Street, Rm. 103, New York, NY 10007, has microfilm copies of
This website lists many U.S. city directories and the physical repositories where they can be found.
City directories from cities around the U.S. for the 1920’s and 1930’s can be found at National Archives and Records Administration regional branches and the headquarters in Washington, D.C. The New York City regional branch is located at the Alexander Hamilton U.S. Custom House, One Bowling Green, 3rd Fl., New York, NY 10004. See this website for the addresses of other regional branches.
New York City Directories can also be found at these locations:
See this website for the addresses and contact information for these libraries..