The Architects Collaborative (including Walter Gropius), 1949-1964 Box 2, Folder 1 Highlight ' architectural philosophy. Abstract Or Scope Gropius, Walter. 1962; Thanks DH and Peter Blake for congratulating him on his birthday. view more view less Avery Drawings & Archives Collections Douglas Putnam Haskell papers, 1866-1979-(bulk 1949-1964).Series I: Pending Correspondence