Black and white photograph of an empty stage being set up between gigs at the WCFL Big 10 Summer Music Festival in Chicago, Illinois on July 18, 1970, by Douglas R. Gilbert. In the midground, a lone audience member with dark clothing and pale hair…

First National House Band, from Grand Rapids, performing at an outdoor concert at Grand Valley State College. Left to right, Pete Weatherhead (guitar), Jack Grant (bass), Tom Deaver (drums), Scott Zylstra (acoustic guitar), and Jim Foerch (banjo).

Black and white photograph of guitarist Fred "Sonic" Smith of the band MC5 performing at the WCFL Concert in Chicago, Illinois on July 18, 1970, by Douglas R. Gilbert. Scanned from the negative.

Freddie Hubbard in concert.

Black and white photograph of George Clinton and the band Funkadelic performing at the WCFL Big 10 Summer Music Festival in Chicago, Illinois on July 18, 1970, by Douglas R. Gilbert. Scanned from the negative.

Black and white photograph of George Clinton and the band Funkadelic performing at the WCFL Big 10 Summer Music Festival in Chicago, Illinois on July 18, 1970, by Douglas R. Gilbert. Scanned from the negative.

Black and white photograph of George Clinton and the band Funkadelic performing at the WCFL Big 10 Summer Music Festival in Chicago, Illinois on July 18, 1970, by Douglas R. Gilbert. Scanned from the negative.

Black and white photograph of the band Funkadelic performing at the WCFL Big 10 Summer Music Festival in Chicago, Illinois on July 18, 1970, by Douglas R. Gilbert. In the foreground, a black man in briefs holds his hands up in peace signs while…

Black and white photograph of the band Funkadelic performing at the WCFL Big 10 Summer Music Festival in Chicago, Illinois on July 18, 1970, by Douglas R. Gilbert. Scanned from the negative.

Black and white photograph of Iggy Pop and The Stooges performing at the WCFL Big 10 Summer Music Festival in Chicago, Illinois on July 18, 1970, by Douglas R. Gilbert. Scanned from the negative.

Black and white photograph of Iggy Pop held on the shoulders of audience members as he crowd surfs at the WCFL Big 10 Summer Music Festival in Chicago, Illinois on July 18, 1970, by Douglas R. Gilbert. Scanned from the negative.

Black and white photograph of Iggy Pop held on the shoulders of audience members as he crowd surfs at the WCFL Big 10 Summer Music Festival in Chicago, Illinois on July 18, 1970, by Douglas R. Gilbert. Scanned from the negative.