Handling records,Social Security Account Applications,Baltimore,Maryland,1937

Title: Baltimore, MD. In handling millions of records two things are of great importance: accuracy and speed. Social Security Account numbers are divided according to the area in which the account number was issued, the group within the area, and the serial, or individual number. There are 9,999 individual or serial numbers in each group, and 100 groups in each area. To eliminate chance of human error, and to speed up the work, the area number and the group number of each account is punched on the employee master card by a 'gang punch' machine. Only those serial numbers belonging to the same area and group are put into the gang punch machine at one time. Thus the machine need be set only once to punch the correct area and group number on hundreds of cards faster and more accurately than a human being could. The photograph above shows master card being punched with holes representing area and group numbers in the gang punch machine
Creator(s): Harris & Ewing, photographer
Date Created/Published: [ca. 1937]
Notes:
Title from unverified caption data received with the Harris & Ewing Collection.
Date based on date of negatives in same range.
Gift; Harris & Ewing, Inc. 1955.
General information about the Harris & Ewing Collection is available at http://hdl.loc.gov/loc.pnp/pp.hec
Temp. note: Batch four.
Subjects:
United States--Maryland--Baltimore.
Bookmark /hec2009009572/
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