I don't have any additional information on this photo, I stumbled upon it at random, photos from those heydays of casual collaborations around Europe seem to pop up so rarely (and, according to the description below, this one must have been pretty interesting), I just needed to share:
"1979 - Truus and Laurie Anderson collaborating at the Vleeshal in Vlissingen, The Netherlands,
at an incredible show organized by Michel Waisvisz that included cheese wheels dropped from planes and exploding manure littered seating for a finale"*
Photo by Dirk Stevesyns
* the source of the quote and the photo is this website
