Description: [caption id="" align="aligncenter" width="425" caption="Charles Doolittle Walcott (1850-1927), paleontologist and fourth Secretary of the Smithsonian Institution (1907-1927), Walcott is at a fossil quarry excavating the Burgess Shale in British Columbia, Canada, c. 1910s - 1920s, by Unidentified photographer, Photographic print, Smithsonian Institution Archives, Record Unit
Description: [caption id="" align="aligncenter" width="409" caption="At the Louisiana Purchase Exposition in Saint Louis, Missouri, a view of the Natural History Fossil Exhibit with the model of a whale and skeletons of several dinosaurs, The Smithsonian coordinated all of the United States Government exhibits and prepared a display on its activities and collections for the exposition,