▁United ▁States ▁Census ▁Bureau ▁ 2 0 0 7 ▁T IG ER / Line ▁Sh ape files ▁ ▁United ▁States ▁Board ▁on ▁Geographic ▁Names ▁( GN IS ) ▁ ▁Indiana Map ▁ ▁External ▁links ▁ ▁Indiana ▁Township ▁Association ▁ ▁United ▁Township ▁Association ▁of ▁Indiana ▁ ▁Category : T own ships ▁in ▁Washington ▁County , ▁Indiana ▁Category : T own ships ▁in ▁Indiana <0x0A> </s> ▁John ▁H aven ▁" Jack " ▁Em erson ▁( F ebru ary ▁ 5 , ▁ 1 9 0 6 ▁– ▁February ▁ 4 , ▁ 1 9 9 7 ) ▁was ▁an ▁American ▁invent or ▁of ▁bi omed ical ▁devices , ▁special izing ▁in ▁resp ir atory ▁equipment . ▁He ▁is ▁perhaps ▁best ▁remembered ▁for ▁his ▁work ▁in ▁impro ving ▁the ▁iron ▁lung . ▁ ▁Early ▁life ▁Em erson ▁was ▁born ▁in ▁ 1 9 0 6 ▁in ▁New ▁York ▁City , ▁the ▁son ▁of ▁Dr . ▁H aven ▁Em erson , ▁Health ▁Commission er ▁of ▁New ▁York ▁City , ▁and ▁Grace ▁Par r ish ▁Em erson , ▁the ▁sister ▁of ▁Max field ▁Par r ish . ▁He ▁was ▁named ▁for ▁his ▁pat ernal ▁grand father ▁( 1 8 4 0 – 1 9 1 3 ), ▁who ▁was ▁also ▁a ▁medical ▁doctor . ▁ ▁At ▁the ▁age ▁of ▁ 2 2 , ▁he ▁bought ▁a ▁rud iment ary ▁machine ▁shop ▁from ▁the ▁estate ▁of ▁a ▁local ▁invent or . ▁He ▁moved ▁the ▁equipment ▁to ▁a ▁small ▁w are house ▁in ▁Harvard ▁Square , ▁in ▁Cambridge , ▁Massachusetts