Original old building material vintage catalog LYON, CONKLIN AND COMPANY, INC of Baltimore, MD.  Lyonore Metal Products.  Galvanized sheets, black sheets, corrugated and formed roofing sheets, galvanized rolled roofing, roofing tin, conductor pipe, eaves through and elbows.  Disbound from a large 1938 construction book, this unique one page technical data specification sheet would display wonderfully matted and framed.