date venue city state
4/13/69  Ballroom - University of Colorado  Boulder  CO 
9/3/72  Folsom Field - University of Colorado  Boulder  CO 
6/7/80  Folsom Field - University of Colorado  Boulder  CO 
6/8/80  Folsom Field - University of Colorado  Boulder  CO 
12/9/81  Activity Center - University of Colorado  Boulder  CO