circa early 1970's. 8 1/2" x 11". VERY GOOD; some toning on the top, general wear.

A rock ’n’ roll marathon was held at the Grande Ballroom on August 5, 1971 to help raise legal expenses for John Sinclair, who had been sentenced to 10 years in prison for giving an undercover officer two marijuana cigarettes. Several local bands, including Detroit (featuring Mitch Ryder); UP; Third Power; and others appeared. SIGNED by Gary Grimshaw.