This particular slide is a picture of Eric Howlett, the inventor of the LEEP Panoramic Stereo Photography System.
made this first slide before he
filed the patent application and before he
publicly disclosed the invention.
The first public demonstration was in March 1980 at the Photographic Society
of America conference in Las Vegas.
The picture in the demonstration viewer that he
carried around the conference was exactly this image, except of course, in color and of a higher resolution.
took the photo with a Speed Graphic carrying a specially made lens board with two lenses 2.5 inches apart.
Because a 4" x 5" sheet of Kodachrome wasn't quite wide enough, he
mounted the lenses at an angle matching the diagonal of the film and then he
tilted the camera by the same angle.
The lenses were two glass elements for each eye off the shelf at Edmund Scientific.
To take the shot, he
stood at about arm's length in front of the camera.
Observe that his
left arm is reaching out to the side of the camera to press the cable release of the focal plane shutter.