▁of ▁country ▁houses ▁in ▁the ▁Chicago ▁area . ▁After ▁six ▁months ▁of ▁study , ▁he ▁opened ▁a ▁new ▁office ▁with ▁a ▁friend ▁from ▁Paris , ▁Henry ▁D ang ler , ▁in ▁Orchestra ▁Hall . ▁T ogether , ▁the ▁pair ▁secured ▁comm issions ▁for ▁country ▁est ates ▁for ▁William ▁E . ▁C low , ▁Jr ., ▁Ralph ▁Po ole , ▁Benjamin ▁N iels , ▁Morris ▁E . ▁Ber ney , ▁David ▁B . ▁Jones , ▁and ▁Charles ▁B . ▁Pi ke . ▁However , ▁Ad ler ▁had ▁never ▁received ▁an ▁architect ural ▁license , ▁failing ▁the ▁exam ▁in ▁ 1 9 1 7 . ▁Because ▁of ▁this , ▁D ang ler ▁had ▁to ▁sign ▁off ▁on ▁Ad ler ' s ▁draw ings ▁because ▁they ▁leg ally ▁had ▁to ▁be ▁signed ▁by ▁a ▁registered ▁architect . ▁ ▁After ▁D ang ler ▁died ▁in ▁ 1 9 1 7 , ▁Ad ler ▁needed ▁to ▁partner ▁with ▁another ▁architect ▁with ▁a ▁struct ural ▁background ▁who ▁could ▁sign ▁off ▁on ▁his ▁projects . ▁He ▁began ▁working ▁with ▁Robert ▁Work . ▁In ▁ 1 9 1 8 , ▁Ad ler ▁purchased ▁an ▁ 1 8 6 4 ▁farm house ▁in ▁Liber ty ville , ▁Illinois ▁and ▁extens ively ▁rem ode led ▁it ▁to ▁for ▁his ▁estate . ▁Asp iring ▁architect ▁Paul ▁Schwe ik her , ▁who ▁would ▁go ▁on ▁to ▁have ▁a ▁significant ▁resident ial ▁practice ▁of ▁his ▁own , ▁studied ▁under ▁Ad ler ▁for ▁a ▁year ▁starting ▁in ▁ 1 9 2 3 . ▁In ▁ 1 9