Major survey currently conducted every five years by the U.S. Census Bureau, currently covering years ending in 2 and 7 (e.g., 1987, 1992, etc.). Until the mid-20th century, these surveys were part of the Decennial Censuses.
Economic censuses include the following (differs depending on year) and often have geographic area data (e.g., state or city):
The economic censuses have been handled differently over the years:
Call number examples:
Note: Censuses from 1950 have call number stem beginning C 3.950: and those published 1972-1975 have call number stem C 56.2XX: