After serving in WWII he established his first studio in the 1950s in New York City's fur district, a fertile neighborhood for the found objects and found materials of his early large Assemblages, Constructions, and "Sewlages" (sewn fabric collages) through that decade, when he worked also as a commercial artist. Seeing the neon signs in these Manhattan streets night after night released his intuition of the medium's untapped flexibility. He called neon "a paradise" he wished to "control" in his own new way, with abstract geometric forms in space.