 Following his arrival in Los Angeles in 1936, the city which would inspire some of his best-known work, he decided to move there permanently.By 1940, the Spring Street lobby of the newly constructed U.S. Post Office and Courthouse in downtown Los Angeles featured the federally commissioned mural "Los Angeles Prehistoric Spanish Colonial," by Biberman.In 1965, when the Post Office was moved and the Courthouse remodeled, all murals were removed and placed in storage.