Eadweard Muybridge was both brilliant and strange. Thomas Grier, one of the students who assisted him, recalled that he had a penchant for working naked himself while photographing the naked human form. “Muybridge was a peculiar man,” Grier remarked. “He did not give a hang for clothes and we used to have to keep an eye on him in the studio.”
Above a set of tracings of a (fully clothed) man on a horse from his book Descriptive Zoopraxography. Or the Science of Animal Locomotion. Published by University of Pennsylvania 1893.
The subscribers to Animal Locomotion have all of their signatures shown in this book. The following page shows some of them [I see a few well known names here; T.H. Huxley, Richard Owen, A Agassiz, Francis Galton.].