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Charles D. Walcott, John Wesley Powell (1834-1902), and Sir Archibald Geikie
Freer's collected photographs of the construction of the Freer Museum
View of Mountains and Glaciers; Horses in Foreground
Letters and notes collected by J.N.B. Hewitt
Charles D. Walcott correspondence, 1908-1913
Bailey Willis Glass Plate Photonegatives Collection
Charles Lang Freer selected papers
MS 4024-c Personal letters received by John Wesley Powell
Secretary Charles D. Walcott
Charles Doolittle Walcott
Letter from Cyrus Adler, Assistant Secretary, to Frank Baker, Superintendent of the National Zoo 2/21/1908
Rocky Mountain Goat Group
Letter from Captain Roger Welles to Charles D. Walcott, January 4, 1918
Charles D. Walcott at Grand Canyon
Secretary Charles D. Walcott
Letter from Woodrow Wilson to Charles D. Walcott, October 13, 1917
Letter from Newton D. Baker to Charles D. Walcott, June 20,1918