Department of Entomology, National Museum of Natural History Department of Entomology, National Museum of Natural History The Department of Entomology is a research department and collection unit of the Smithsonian Institution's National Museum of Natural History (NMNH), located in Washington, DC. The department houses the U.S. National Insect Collection, one of the largest entomological collections in the world, with over 35 million specimens housed in 132,354 drawers, 33,000 jars or vials, and 23,000 slides in more than 5,200 cabinets. The department also includes research scientists and technical staff from the Smithsonian Institution, the United States Department of Agriculture Systematic Entomology Lab (SEL) and United States Department of Defense
Smithsonian Libraries Smithsonian Libraries Smithsonian Libraries (SIL), formerly known as Smithsonian Institution Libraries, is a library system comprising 20 branch libraries serving the various Smithsonian Institution museums and research centers, as well as central support services which include a Book Conservation Laboratory and an Imaging Center. The Libraries serve Smithsonian Institution staff as well as the scholarly community and general public with information and reference support. Its collections number over 1.5 million volumes including 40,000 rare books and 2,000 manuscripts. The Libraries also holds the United States' largest trade literature collection, which includes over 300,000 commercial catalogs dating from the early nineteenth