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![Identified! [Meat testing at the U.S. Department of Agriculture, Beltsville, Maryland] (LOC)](http://farm9.static.flickr.com/8662/16215238328_6ffc9cde2b_m.jpg)
by The Library of Congress
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![Identified! [William Andrew Johnson, former slave to former President Andrew Johnson, who was presented with a silver handled cane by President Roosevelt on a visit to Washington in 1937. Photo taken on steps of U.S. Capitol, Washington, D.C.] (LOC)](http://farm8.static.flickr.com/7441/16401960022_b9f08b477c_m.jpg)
by The Library of Congress
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by U.S. National Archives
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![[Private Charles F. Sherman of 2nd Massachusetts Light Artillery Battery, with inset photo of unidentified woman] (LOC)](http://farm8.static.flickr.com/7317/9158154429_bd7c0a67f0_m.jpg)
by The Library of Congress
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by U.S. National Archives
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![[Jane Jennings, also known as Janet, nurse at tent hospitals in Washington, D.C.] (LOC)](http://farm66.static.flickr.com/65535/47789261771_919d3c1b28_m.jpg)
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by U.S. National Archives
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![Identified! [Secretary of Commerce Herbert Hoover at the California State Society annual dinner in Washington, D.C., cutting what was said to be the world's largest pie...] (LOC)](http://farm66.static.flickr.com/65535/50546791273_5a5a3ae279_m.jpg)
by The Library of Congress
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