▁in ▁ 1 8 9 2 . ▁Its ▁exhibition ▁at ▁Chicago ' s ▁ 1 8 9 3 ▁World ' s ▁Columb ian ▁Ex position ▁was ▁critic ized . ▁ ▁Rel ated ▁works ▁E ak ins ▁made ▁prepar atory ▁sketch es ▁for ▁The ▁Ag new ▁C lin ic ▁– ▁a ▁drawing ▁of ▁Dr . ▁David ▁Hay es ▁Ag new , ▁an ▁oil ▁study ▁of ▁Ag new , ▁and ▁a ▁compos itional ▁sketch ▁for ▁the ▁entire ▁work . ▁Ind ividual ▁studies ▁of ▁all ▁ 3 3 ▁figures ▁were ▁probably ▁made , ▁but ▁none ▁are ▁known ▁to ▁surv ive . ▁ ▁E ak ins ▁later ▁painted ▁a ▁black ▁and ▁white ▁version , ▁specifically ▁to ▁be ▁photograph ed ▁and ▁reprodu ced ▁as ▁a ▁phot og rav ure . ▁His ▁friend ▁and ▁prot ég é , ▁Samuel ▁Murray , ▁mode led ▁a ▁stat u ette ▁of ▁E ak ins ▁at ▁work ▁on ▁the ▁painting . ▁ ▁As ▁of ▁ 2 0 0 9 , ▁The ▁Ag new ▁C lin ic ▁was ▁on ▁loan ▁from ▁the ▁University ▁of ▁Pennsylvania ▁to ▁the ▁Philadelphia ▁Museum ▁of ▁Art . ▁ ▁Notes ▁ ▁S ources ▁ ▁Sid ney ▁Kirk pat rick . ▁The ▁Re ven ge ▁of ▁Thomas ▁E ak ins . ▁Y ale ▁University ▁Press , ▁ 2 0 0 6 , ▁. ▁ ▁Further ▁reading ▁Philadelphia ▁Museum ▁of ▁Art : ▁Thomas ▁E ak ins ' ▁The ▁Ag new ▁C lin ic ▁▁ ▁Category : Port ra its ▁by ▁Thomas ▁E ak ins ▁Category : Paint ings ▁in ▁Philadelphia ▁Category :