ie ▁Library , ▁and ▁the ▁C iv ic ▁Club ▁of ▁Al leg hen y ▁County ▁who ▁both ▁had ▁plans ▁for ▁space ▁in ▁the ▁new ▁building . ▁Const ruction ▁was ▁post pon ed ▁for ▁more ▁than ▁a ▁year ▁though ▁as ▁the ▁general ▁contract ing ▁firm ▁of ▁W . ▁F . ▁Tr im ble ▁& ▁S ons ▁file d ▁an ▁inj unction ▁claim ing ▁that ▁the ▁selection ▁of ▁James ▁L . ▁Stuart ▁as ▁consult ing ▁and ▁super vis ing ▁engineer ▁was ▁done ▁through ▁an ▁impro per ▁b idd ing ▁process . ▁The ▁case ▁was ▁eventually ▁decided ▁by ▁the ▁Pennsylvania ▁Supreme ▁Court ▁and ▁resolved ▁by ▁a ▁legisl ative ▁act , ▁and ▁development ▁on ▁the ▁building ▁was ▁allowed ▁to ▁continue . ▁The ▁ground bre aking ▁on ▁the ▁building ▁occurred ▁with ▁a ▁ceremony ▁on ▁July ▁ 6 , ▁ 1 9 1 5 ▁with ▁County ▁Commission er ▁I . ▁K . ▁Campbell ▁striking ▁the ▁first ▁blow ▁with ▁a ▁pick ▁and ▁Joseph ▁G . ▁Arm strong ▁Jr . ▁lif ting ▁the ▁first ▁sh ov el ▁of ▁d irt . ▁Both ▁the ▁pick ▁and ▁the ▁sh ov el ▁were ▁later ▁silver ▁pl ated ▁and ▁preserved ▁as ▁m ement os ▁in ▁the ▁office ▁of ▁the ▁Mayor . F ollow ing ▁significant ▁progress ▁in ▁construction ▁a ▁corner stone ▁lay ing ▁ceremony ▁was ▁planned ▁to ▁co inci de ▁with ▁the ▁celebr ation ▁of ▁Pitts burgh ' s ▁Cent enn ial . ▁On ▁March ▁ 2 6 , ▁ 1 9 1 6 ▁the ▁celebr ation ▁of ▁the ▁ 1 0 0 th ▁anni