▁Julius ▁Pl ück er ▁( 1 8 0 1 - 1 8 6 8 ). ▁ ▁New ▁Jersey ▁Historical ▁Society ▁-- ▁ ▁Francis ▁Rob b ins ▁U pton ▁ ▁( 1 8 5 2 - 1 9 2 1 ). ▁ ▁New ▁York ▁Public ▁Library ▁-- ▁Ferdinand ▁Rud olph ▁Hass ler ▁ ▁( 1 7 7 0 - 1 8 4 3 ). ▁ ▁New ▁York ▁University ▁-- ▁ ▁Richard ▁Cour ant ▁ ▁( 1 8 8 8 - 1 9 7 2 ). ▁ ▁North western ▁University ▁-- ▁ ▁Ernst ▁D . ▁Hell inger ▁ ▁( 1 8 8 3 - 1 9 5 0 ); ▁Helen ▁M . ▁Clark ▁ ▁( 1 9 0 8 - 1 9 7 4 ); ▁Lo is ▁W . ▁Griff ith s ▁ ▁( 1 8 9 9 - 1 9 8 1 ). ▁North western ▁State ▁University ▁-- ▁Guy ▁Wal do ▁Dun ning ton ▁( 1 9 0 6 - 1 9 7 4 ) ▁ ▁Ohio ▁History ▁Connection ▁-- ▁ ▁J ared ▁Mans field ▁ ▁( 1 7 5 9 - 1 8 3 0 ), ▁also ▁ ▁U . S . ▁Military ▁Academy . ▁ ▁Pr inc eton ▁University ▁-- ▁ ▁Alfred ▁James ▁Lot ka ▁ ▁( 1 8 8 0 - 1 9 4 9 ); ▁ ▁Walter ▁Min to ▁( 1 7 5 3 - 1 7 9 6 ); ▁ ▁Eug ene ▁Paul ▁W igner ▁ ▁( 1 9 0 2 - 1 9 9 5 ); ▁Henry ▁Dallas