▁the ▁period ▁ 1 9 2 9 – 1 9 3 2 ▁and ▁supp lement ed ▁until ▁ 1 9 3 8 . ▁The ▁initi ator ▁and ▁the ▁main ▁driving ▁force ▁behind ▁the ▁action ▁of ▁collect ing ▁the ▁don ations ▁from ▁artists ▁was ▁a ▁painter ▁and ▁art ▁the or etic ian ▁W ład ys ław ▁Str zem i ński , ▁act ively ▁supported ▁by ▁Kat arz yna ▁Kob ro ▁– ▁a ▁sculpt or , ▁Henry k ▁Sta ż ew ski ▁– ▁painter , ▁as ▁well ▁as ▁Jan ▁Br zę kow ski ▁and ▁Julian ▁Pr zy bo ś ▁– ▁po ets . ▁ ▁The ▁Collection ▁in ▁its ▁ide ological ▁dimension ▁reflect s ▁Str zem i ński ' s ▁art istic ▁prefer ences , ▁although ▁its ▁final ▁shape ▁was ▁the ▁product ▁of ▁the ▁activities ▁of ▁many ▁people , ▁including ▁Henry k ▁Sta ż ew ski , ▁Hans ▁Ar p ▁and ▁Michel ▁Se u ph or . ▁It ▁presents ▁an ▁over view ▁of ▁avant - gar de ▁str ands ▁ ▁and ▁t endencies ▁of ▁the ▁late ▁ 1 9 2 0 s ▁and ▁includes ▁master pie ces ▁of ▁Ab stra ction ists , ▁such ▁as ▁Hans ▁Ar p ▁and ▁Soph ie T ae uber - Ar p , ▁The o ▁van ▁Does burg , ▁Jean ▁Gor in , ▁Jean ▁Hel ion , ▁Vil mos ▁H usz ar , ▁Henry k ▁Sta ż ew ski ▁or ▁Georges ▁V ant ong er lo o . ▁The ▁collection ▁also ▁includes ▁art works ▁of ▁artists ▁representing ▁Cub ism ▁( e