細節
A late Victorian pine pole ladder
enclosing seven treads, with metal plaque Davis Patent Patent Applied for one pole ladder -- 100.1.2/in. (255cm.) high closed, 90in. (229cm.) high open
enclosing seven treads, with metal plaque Davis Patent Patent Applied for one pole ladder -- 100.1.2/in. (255cm.) high closed, 90in. (229cm.) high open