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Social Security Board Records Office - Workers at work in part of the key machine section, where master cards are punched circa 1937.
UMG21A21_296

Social Security Board Records Office - Workers at...

Punched Data Cards Fed Into Processor
UMG21A18_485

Punched Data Cards Fed Into Processor

Document Data To Punch Cards
UMG20A12_216

Document Data To Punch Cards

Punch Card Machines
UMG20A12_212

Punch Card Machines

Punch Card Accounting
UMG20A12_218

Punch Card Accounting

Office Workers Entering Data
UMG20A12_217

Office Workers Entering Data

Workers Using Data Punch Cards
UMG20A12_211

Workers Using Data Punch Cards

New Census Bureau Machines
UMG20A12_221

New Census Bureau Machines

IBM Punch Card Machine
UMG20A12_236

IBM Punch Card Machine