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At the Institute’s core is the Gilder Lehrman Collection, one of the great archives in American history. More than 85,000 items cover five hundred years of American history, from Columbus’s 1493 letter describing the New World through the end of the twentieth century.

Williams, Eugene W., 1925-1949 The Air Force Clock

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Gilder Lehrman Collection #: GLC09587.181 Author/Creator: Williams, Eugene W., 1925-1949 Place Written: s.l. Type: Note Date: 1942-1949 Pagination: 2 p. : Height: 13.6 cm, Width: 6 cm Order a Copy

A cheat sheet for understanding the Air Force clock. On the front are A.M. times, along with a brief description: "say time as 0700 ZERO SEVEN HUNDRED or 1000 TEN HUNDRED. No dots are used." On the back are the P.M. times and similar instructions.

Williams, Eugene W., 1925-1949

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