Original old vintage catalog W. D. CROOKS AND SONS of Williamsport, PA.  Manufacturers of Hardwood Veneer Flush Stock Doors and Special Laminated Panels.  Pictured is French paneled door used in residence of Greenwich, CT., Administration Building at Board of Education, Philadelphia, Payne Whitney Gymnasium at Yale University.  Disbound from a large 1938 building material construction book, these unique three page technical data specification sheets would display wonderfully matted and framed. It would be a marvelous addition to your architecture and engineering library.