single american depression era reinforced heavy gauge steel collapsible a-frame ladder possibly designed and fabricated by or for the safety steel ladder company, st. louis, mo. the well-built lightweight all-steel ladder has been brushed and sanded down to bare metal and sealed with a clear coat lacquer. the vertical members are heavily riveted where each rung is situated. the channeled steel rails or stringers have large, elongated perforations on both sides. the hinged single cross bar folds with ease. the ladder is both rigid and structurally sound. ideal size for use in residential as well as commercial settings. great for displaying books and/or objects.