Humpin' Hanna's

Humpin' Hanna's on E. Locust Street in Milwaukee was an underground (literally and figuratively) club originally called O'Brad's, and one of Cheap Trick's regular haunts for the first 2-3 years of the band's existence.

Rick and Robin at Humpin' Hanna's, 1975:

For a better idea of what the stage looked like:

Top:

Commander Cody and his Lost Planet Airmen

Bottom:

Manfred Mann's Earth Band (both December 1972)

Note: the club billed itself as simply "Hanna's" in its advertising, presumably because "Humpin'" was deemed too risqué for print at the time.