▁du ▁Pe u ple , ▁was ▁completed ▁in ▁ 1 9 3 1 ▁thanks ▁to ▁the ▁gener ous ▁spons or ship ▁by ▁Prince ▁and ▁Card inal ▁Adam ▁Stefan ▁S ap ie ha . ▁ ▁Through out ▁the ▁inter war ▁period , ▁the ▁Krak ów ▁Phil harm onic ▁maintained ▁also ▁the ▁Polish ▁Professional ▁Mus icians ▁Trade ▁Union ▁set ▁up ▁to ▁protect ▁the ▁w elf are ▁of ▁its ▁members ▁as ▁well ▁as ▁the ▁art istic ▁level ▁of ▁their ▁performances . ▁ ▁Music ▁conserv ator ies ▁were ▁established ▁in ▁Warsza w , ▁Poz na ń , ▁Kat ow ice , ▁Krak ów , ▁Ł ód ź ▁and ▁Wil no . ▁In ▁ 1 9 3 4 ▁the ▁main ▁branch ▁of ▁Poland ' s ▁National ▁Museum ▁was ▁ere cted ▁in ▁Krak ów ▁with ▁hold ings ▁reaching ▁ 3 0 0 , 0 0 0 ▁items . ▁The ▁film ▁industry ▁received ▁major ▁boost ▁around ▁ 1 9 3 4 ▁when ▁a ▁generation ▁of ▁new ▁actors ▁joined ▁in ▁including ▁Stefan ▁Jar acz , ▁Mie cz ys ław a ▁ Ć wik li ńska , ▁El ż bi eta ▁B ars z cz ew ska , ▁Kaz im ierz ▁Jun os za - St ęp owski ▁and ▁Adolf ▁D ym s za . ▁The ▁period ▁saw ▁the ▁introduction ▁of ▁the ▁studio ▁system ▁of ▁film making ▁with ▁S f inks ▁of ▁Wars aw , ▁founded ▁by ▁Aleks ander ▁H ert z , ▁becoming ▁the ▁biggest ▁film ▁production ▁company ▁locally . ▁The ▁studio ▁discovered ▁the ▁then ▁ 1 7 - year -