Public domain
Machine signs 7,000 social security checks per hour with no writer's cramp. Washington, D.C., Dec. 14. John W. Thomas is shown here feeding social security checks into a check signing device which reels off some 7,000 checks per hour. The checks are being made at the Treasury Department's Disbursing
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Credit lineMachine signs 7,000 social security checks per hour with no writer's cramp. Washington, D.C., Dec. 14. John W. Thomas is shown here feeding social security checks into a check signing device which ree. 1939-01-01. Harris & Ewing. Harris & Ewing Collection, Library of Congress. Public domain.
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