Pedigrees
117 objects illustrate this topic:

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"Nomenclature and Tables of Kinship," by Francis Galton, an appeal for comments on his survey of heredity, Nature (vol. 69:1787), multiple pages (#2199)
"Nomenclature and Tables of Kinship," by Francis Galton, an appeal for comments on his survey of heredity, Nature (vol. 69:1787) (#2200)
" Osawatomie State Hospital: case no. 12198. Diagnosis: psychosis with Huntington's chorea" (#966)
Pedigree: "A.B.W. family: musical, literary, and inventive ability" (#926)
Pedigree: "A family with orthodactyly" (#928)
Pedigree: "Ancestral influence in the human female" (#924)
Pedigree: "Ancestral influence in the human male" (#925)
Pedigree and photo of polydactyly, by Morris Steggerda, multiple pages (#885)
"Pedigree chart of John Burroughs' family" (#580)
Pedigree data collected according to Franics Galton's Record of Family Faculties (1884), multiple pages (#2043)
Pedigree exhibit: "Abraham Lincoln: family-stock study," 3rd International Eugenics Conference (#1063)