sentences:  Also in 1941, Klumb designed residential properties in the planned community of Greenbelt, Maryland, although the war prevented construction.Having met New Deal brain trust planner Rexford Tugwell in the late 1930s, he was invited to move to Puerto Rico in 1944 and collaborate in the design of post-war modern Puerto Rico.He left Los Angeles on February 24, 1944, and settled in San Juan, Puerto Rico, where devoted most of the rest of his life designing many buildings there.