For a number of years in the late 1960s, Mrs. Prisbry's Extraplanetary Rat Brigade (as the Rat Patrol was known at that time) organized free "happenings" such as this multi-band concert and trash-pickup day on February 9, 1967 at Cricket Hill, near Montrose Harbor in Chicago. The shows were known to have been very popular, but in the aftermath of the '68 Democratic Convention protests, they were discontinued without explanation.