This presentation is from a series of slides that were in a box that contained events from the years 1964 to 1966. According to Don Large’s notes, the event is called “Strafford 1966”. From a review of the slides, this does not look like a concert. The location is likely Strafford in Ontario, Canada.
Chorus member name: Baranski, Christine; Doughty, Vanetta; Ernzen, Phil; Kossick, Glenn; Matoshko, Velma; McBeth, Ray; Mistretta, Carol; Nanni, Dan; Stuckey, Paul; Whalen, Marge