Westbeth Artists Housing was founded in 1970 to provide affordable housing for artists and their families. It occupies a full city block in what back then was one of New York’s less desirable neighborhoods, the desolate far-West Village. Over the next fifty years, the building complex served as a Great Society for bohemians, home at any one time to more than three hundred and eighty creators, who included the pioneering video artist Nam June Paik, jazz great Gil Evans, and the photographer Diane Arbus, who took her life in her apartment in 1971, barely a year after she’d moved in. …