Hereditary Disorders
146 objects illustrate this topic:

 Page: of 15
Three giants with pedigree and notes, circus acts (#749)
Three midgets, with notes, circus acts (#752)
"Toney, alligator skin boy, Dreamland Circus side show, Coney Island," with icthyosis a skin trait (#865)
Two boys with polydactyly. (#1015)
"Unfit Human Traits" and "Triangle of Life." (#1568)
W.P. Heningham letter to E. Nettleship, about inheritance of human disorders and sex determination, with references to Bateson and Garrod (11/28/1904), multiple pages (#2136)