Edward S. Ross (1915-2016) was a pioneer of close up photography. Ed received his PhD in 1941 with the Department of Entomology at UC Berkeley, where he was a teaching assist for E.O. Essig. Before finishing his degree he was offered the position of Curator of Entomology at the California Academy of Sciences in San Francisco in 1939, and two years later became chair of the entomology department, a position he held for 41 years. Initially Ed was interested in Histerid beetles, but soon switched to webspinners (Embiidina), a group for which little was known at the time. His studies took him around the world, particularly to the tropics where webspinners are most diverse. During his travels Ed photographed arthropods, plants, mammals, people, and natural landscapes. His images appeared in numerous publications including National Geographic Magazine, Insects Close Up, and Insects and Plants. In 2018, Ed’s collection of ~100,000 35mm slides were generously donated to the Essig Museum of Entomology by his wife, Sandra Miller Ross, to be digitized and made available for research, education, and outreach. Once digitized, the images will be available through CalPhotos.