Herbert Bayer, Diagram of extended vision in exhibition presentation, 1930from OCTOBER 22, Fall 1982 (Judgement Seat of Photography by Christopher Phillips)
Herbert Bayer, Diagram of extended vision in exhibition presentation, 1930
artscanada---Stones, bones and skin: Ritual and Shamanic Art, December 1973/January 1974, issue numbers 184-187 

Clarence Schmidt's Miracle on the Mountain, Ohayo Mountain, Woodstock, NY.