The American Statistics Index (ASI) serves as a comprehensive guide to statistical publications created by all branches and agencies of the U.S. government, providing federal publications containing social, economic, and demographic statistics. The ASI indexes all types of statistical publications (including annuals and biennials, series, and periodicals), whether they were created by the Government Printing Office (GPO) or an individual government agency.
You can find the American Statistics Index (ASI), both in hardcover and microfiche formats, in the Government Information Reference Section on the 4th floor of McKeldin Library. The hardcover ASI covers years 1973-2011 and the microfiche covers 1973-2010.
The call number for the ASI hardcover version is Z 7551.A4, located in the "US Gov't Info. Reference & Su Docs Y1" area on the map below. See the catalog record here (requires UMD login).
The microfiche call number is Z 7551.A42, located in the "Maps" area on the map below. Its catalog record can be found here. Microfiche readers can be found on the 1st floor, in the Periodicals Section.