A self-described "incurable formalist," Abraham's notable built architecture includes "House Dellacher" (1963–67), in the Oberwart District of Burgenland, Austria, "Public Housing Complex," (1968–69), and "Experimental Kindergarten" (1969-70) in Providence, Rhode Island. In 1973, Abraham was awarded the commission for "Rainbow Plaza" in Niagara Falls, New York, which he co-designed with Giuliano Fiorenzoli. The same year, Abraham was asked to transform the New Essex Market Courthouse building, located at 32 Second Avenue, New York City, for reuse as the Anthology Film Archives (1980–89), with collaborator-architects Kevin Bone and Joseph Levin. The portfolio "Untitled" marked the occasion.