Just 12 days until the release of the 1940 census!

It’s also Women’s History Month. Many women were employed by the Census Bureau, working in the office or in the field. These photographs from the National Archives document their work.

In processing the 1940 Census, operators transferred information appearing on the schedules filled out by enumerators to punch cards. This permitted processing of census returns by sorting machines.

Unit Wiring Boards for Tabulating Machines, Highly Trained Experts Prepared the Charts and Instructions for Wiring the Boards for Each Job, these Girls Did the Actual Wiring, No Small Job in Itself, 1940–1941

Alphabetic Accounting Machine Equipped with Gang Summary Punch, IBM, Census Used 12 Machines of this Type, 1940–1941

Enumeration, One Day was Devoted to the Enumeration of Trailer Camps and Other Places Inhabited by Transients, 1940-1941

Population and Housing Editors, Negro Section, 1940–1941

Geographers Division, a Planimeter, 1940–1941

Occupational Coding, Peak Employment on this Operation was 806, there are 25,000 Occupational Designations and 10,000 Industry Designations Classified in 541 Occupational Groups for Census Purposes, 1940–1941

Occupational Coder, Average Daily Production of a Trained Clerk was 1,886 Lines, and the Highest Record was 6,000 Lines, 1940–1941

Review Section in Machine Tabulation Division, All Work is Checked before Transfer to Subject Divisions, 1940–1941



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