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Photographer: John Dominis - 1954
Photographer: John Dominis - 1954
A Postal Service worker collecting mail during a heat wave in 1954. During the 1950s, there was a significant shift in the American workforce: White-collar workers began to outnumber blue-collar workers.

NEXT: Photo from: Hulton Archive - 1970
Last updated September 03 2010: 6:23 AM ET
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