Two proof sheets containing 8 black and white photographic proofs. From left to right, top to bottom, the images are of: Dr. David Blumen, Mary Ellen OReilly and Gary Wiss standing next to a machine. Dr. David Blumen and Gary Wiss standing on either side of the machine. Dr. David Blumen, Mary Ellen OReilly and Gary Wiss standing next to the machine. Dr. David Blumen with "Blacky" the labrador next to the machine. The entire Starr Lab crew consisting of Dr. Alfred Lui, Dr. Fernando Leon, Albert Starr, Dr, David Blumen, Mary Ellen OReilly, Betty Stephens, Dr. Colin McCord, GaryWiss, "Blacky" and Otto Hintz. Dr. David Blumen and Gary Wiss on either side of the machine. another Starr Lab crew group view. And Dr. David Blumen and Gary Wiss looking at the machine.