Pedigrees
117 objects illustrate this topic:

 Page: of 12 
Family photographs and pedigree from the Navajo Reservation, by Morris Steggerda, multiple pages (#2490)
"Family-stock of a woman sterilized by the state of Maine" (#958)
"Family-tree folder: Dressmakers", multiple pages (#48)
Family-tree folder recording inheritance of allergies, longevity, civic leadership, and other traits (#114)
Family tree folder recording inheritance of asthma (#107)
Family tree folder recording inheritance of longevity, multiple pages (#78)
Family tree folder recording inheritance of mathematical and musical ability, multiple pages (#104)
"Four generations in one almshouse at one time at Yaphank, New York" (#295)
"Fragment of Dwight family: inherited scholarship" (#1000)
"Hededitary Predisposition to Mental Illness: Dementia Praecox" (schizophrenia) (#1698)
Hemophilia pedigree by Dr. Bess Lloyd (#289)