▁Le if ▁Erik sson ▁Memorial ▁( 1 9 2 9 – 1 9 3 2 ) ▁has ▁become ▁as ▁icon ic ▁for ▁I cel and ers ▁as ▁the ▁Stat ue ▁of ▁Liber ty ▁is ▁for ▁Americans . ▁ ▁Te acher ▁Through out ▁his ▁career , ▁Cal der ▁frequently ▁worked ▁as ▁a ▁teacher . ▁He ▁was ▁instruct or ▁in ▁model ing ▁at ▁the ▁Pennsylvania ▁Museum ▁School ▁of ▁Indust rial ▁Art ▁from ▁ 1 8 9 9 ▁to ▁ 1 9 0 4 . ▁He ▁taught ▁at ▁the ▁National ▁Academy ▁of ▁Design ' s ▁evening ▁school , ▁ 1 9 1 0 – 1 1 , ▁and ▁alongside ▁Herm on ▁At kins ▁Mac Ne il ▁at ▁N AD , ▁ 1 9 1 1 - 1 2 . ▁He ▁taught ▁model ing ▁at ▁the ▁Art ▁Stud ents ▁League ▁of ▁New ▁York , ▁ 1 9 1 8 - 2 2 . ▁He ▁was ▁never ▁on ▁PA FA ' s ▁fac ulty , ▁but ▁may ▁have ▁occasionally ▁lect ured ▁there , ▁where ▁his ▁friend ▁Charles ▁Graf ly ▁was ▁instruct or ▁in ▁sculpt ure . ▁ ▁Personal ▁Cal der ▁married ▁portrait ▁painter ▁Nan ette ▁L eder er ▁on ▁February ▁ 2 2 , ▁ 1 8 9 5 , ▁and ▁they ▁lived ▁in ▁Philadelphia ▁for ▁the ▁first ▁de cade ▁of ▁their ▁marriage . ▁They ▁had ▁two ▁children : ▁Margaret ▁Cal der ▁Hay es ▁( 1 8 9 6 – 1 9 8 8 ) ▁and ▁Alexander ▁" S andy " ▁Cal der ▁III ▁( 1 8 9