Gilbert, Douglas R., “Spectators at WCFL Concert in Chicago,” Digital Collections, accessed January 10, 2026, https://digitalcollections.library.gvsu.edu/document/43515.
Black and white photograph of audience members sitting in the grass of Soldier Field at the WCFL Big 10 Summer Music Festival in Chicago, Illinois on July 18, 1970, by Douglas R. Gilbert. Scanned from the negative.