Original 5x7" concert postcard for the Bob Fried (poster artist) Memorial Boogie, featuring Jerry Garcia and Friends (ended up being The Grateful Dead,) Kingfish, Keith & Donna and The Mirrors,  at theWinterland in San Francisco, CA on 6/17/1975.  The card has a schedule backing.
 
Art by Stanley Mouse, Alton Kelley, Wes Wilson, Victor Moscoso and Randy Tuten
 
The postcard is in great condition.  Just a bit of edgewear and small creasing.