On August 21, 1967, a 12-hour Back to School dance was held at the Aldrich Arena, featuring the following local bands:  (Thanks to who ever posted this poster on Facebook!)

• The Mystics
• The Del Counts
• Pride & Joy
• Showtime
• The Marauders
• The Bananas
• The Grasshoppers
• Sunshine World
• Zarathustra
• Kaleidoscope
• The Sir Raleighs
• Fairchild

I had this item also:  In August 1967 the Fillmore Light Show came to Aldrich Arena, with six top bands (unnamed in the ad).  Not sure if this is the same event.  A search of Aldrich Arena only brings up hockey games.