Description: [caption id="" align="aligncenter" width="424" caption="Entomological workers of the Division of Insects, United States National Museum (USNM), 1925, by Unknown photographer, Photographic print, Smithsonian Institution Archives, Record Unit 9555 Box 1, John Frederick Gates Clarke Oral History Interview, Negative Number: 84-3567."][/caption]
Description: [caption id="" align="aligncenter" width="291" caption="A storage area, used by the Division of Insects at the United States National Museum, now known as the National Museum of Natural History, has cabinets and shelves of books, c. 1915, by Unidentified photographer, Photographic print, Smithsonian Institution Archives, Record Unit 9555, Box 1, John Frederick Gates Clarke
Description: [caption id="" align="aligncenter" width="307" caption="Wilhelm Carl Paul Gottlieb Heinrich (1880-1955) in 1913 joined the United States Department of Agriculture, He first worked on applied entomology but later switched to the classification of Lepidoptera, c. 1940, by Unidentified photographer, Photographic print, Smithsonian Institution Archives, Record Unit 7427, Box 1,