People /Joseph N. Callahan peoplepill id: joseph-n-callahanJNC 1 views today 1 views this weekAmerican swimmerJoseph N. CallahanBiographyListsAlso ViewedListsJoseph N. Callahan is in following listsBy field of workNotable American athletesGender: MaleBy work and/or countryNotable American AthletesGender: MaleNotable American SwimmersGender: MaleFrom our partnersSponsoredJoseph N. Callahan