▁poster ▁collection ▁she ▁organized ▁was ▁shown ▁at ▁the ▁Library ▁of ▁Congress ▁and ▁later ▁became ▁part ▁of ▁the ▁Metropolitan ▁Museum ▁of ▁Art ' s ▁permanent ▁collection . ▁ ▁While ▁in ▁Washington , ▁she ▁met ▁Ralph ▁B ett el heim , ▁a ▁refuge e ▁from ▁Austria ▁and ▁an ▁econom ist . ▁They ▁were ▁married ▁in ▁ 1 9 4 2 . ▁ ▁From ▁ 1 9 4 3 ▁through ▁ 1 9 7 0 , ▁Const antine ▁worked ▁in ▁the ▁architecture ▁and ▁design ▁department ▁of ▁the ▁Museum ▁of ▁Modern ▁Art , ▁as ▁associate ▁cur ator ▁and ▁later ▁as ▁cur atorial ▁consult ant , ▁where ▁she ▁helped ▁popular ize ▁collections ▁that ▁were ▁hard ▁to ▁categor ize ▁or ▁had ▁been ▁ignored , ▁which ▁she ▁called ▁" f ug itive ▁material ". ▁Her ▁ 1 9 4 8 ▁exhibition ▁Pol io ▁Post ers ▁was ▁the ▁museum ' s ▁first ▁devoted ▁to ▁causes , ▁and ▁included ▁works ▁she ▁commission ed ▁to ▁help ▁spread ▁aw aren ess ▁of ▁various ▁social ▁issues . ▁ ▁She ▁organized ▁solo ▁exhib itions ▁for ▁graph ic ▁and ▁product ▁design ers ▁including ▁Al vin ▁L ust ig , ▁Bruno ▁Mun ari , ▁Mass imo ▁V ign elli ▁and ▁T ad an ori ▁Y ok oo ▁that ▁were ▁described ▁by ▁The ▁New ▁York ▁Times ▁as ▁" care er - def ining ." ▁Her ▁bro ader - th emed ▁exhib itions ▁in ▁the ▁applied ▁and ▁decor ative ▁arts ▁included ▁Oliv etti : ▁Design ▁in ▁Indust ry ▁in ▁ 1 9 5 2 , ▁Sign s ▁in ▁the ▁Street