People United States of America James Mark McGinnis Barr peoplepill id: mark-barrJMMB 1 views today 2 views this weekAmerican mathematicianJames Mark McGinnis BarrBiographyFAQListsAlso ViewedListsJames Mark McGinnis Barr is in following listsBy field of workNotable American businesspeopleGender:Male, Born in:Years 1850 to 1899Notable American mathematiciansGender:Male, Born in:Years 1850 to 1899By work and/or countryNotable American MathematiciansGender:Male, Born in:Years 1850 to 1899Notable American InventorsGender:Male, Born in:Years 1850 to 1899By category1871 births1950 deathsAmerican electrical engineersAmerican inventorsEngineers from PennsylvaniaEnglish electrical engineersEnglish inventorsGolden ratioFrom our partnersSponsoredJames Mark McGinnis Barr
