▁was ▁also ▁president ▁of ▁the ▁American ▁Historical ▁Association ▁in ▁that ▁year . ▁ ▁In ▁the ▁mid - 2 0 th ▁century , ▁C och ran ▁was ▁one ▁of ▁the ▁most ▁significant ▁economic ▁histor ians ▁of ▁the ▁United ▁States , ▁producing ▁The ▁Age ▁of ▁Enter prise ▁( 1 9 6 1 ), ▁an ▁important ▁work ▁on ▁the ▁history ▁of ▁American ▁capital ism . ▁ ▁Through out ▁his ▁career , ▁he ▁attempted ▁to ▁examine ▁the ▁history ▁of ▁business ▁not ▁merely ▁as ▁a ▁narrow ly ▁economic ▁topic , ▁but ▁also ▁as ▁a ▁cultural ▁one . ▁ ▁He ▁opened ▁up ▁new ▁method ological ▁approaches ▁and ▁areas ▁of ▁research ▁in ▁the ▁field ▁of ▁economic ▁history . ▁ ▁Personal ▁life ▁and ▁death ▁C och ran ▁was ▁married ▁three ▁times . ▁ ▁He ▁died ▁on ▁May ▁ 2 , ▁ 1 9 9 9 ▁at ▁the ▁Qu ad rangle ▁Ret irement ▁Center ▁in ▁Ha ver ford , ▁Pennsylvania . ▁ ▁Works ▁The ▁P ab st ▁B rew ing ▁Company : ▁The ▁History ▁of ▁an ▁American ▁Business ▁( 1 9 4 8 ) ▁Rail road ▁Le aders : ▁The ▁Business ▁Mind ▁in ▁Action ▁( 1 9 5 3 ) ▁The ▁American ▁Business ▁System : ▁A ▁Historical ▁Pers pective , ▁ 1 9 0 0 – 1 9 5 5 ▁( 1 9 5 7 ) ▁A ▁Basic ▁History ▁of ▁American ▁Business ▁( 1 9 5 9 ) ▁The ▁Age ▁of ▁Enter prise ▁( 1 9 6 1 ) ▁Rail road ▁Le aders ▁ 1 8 4 5 – 1 8 9