Glass stereoview by F. Langenheim, Philadelphia, with both 1850 and 1856 copyrights. Original tape binding and gilt embossed paper mat inscribed with the title, "Niagara Falls, Suspension Bridge, Railroad Track" (overall good, wear to tape binding). -- Albumen stereoview on cardstock mount by George Barker, Niagara Falls, NY. Printed title in lower margin, "843. New Suspension Bridge - Niagara - 1268 feet long" (toning, light soiling, some edge and corner wear to mount). -- Together, 2 stereoviews, including an early glass example.