BALOPTICONS AND ACCESSORIES [catalogue catalog]
Bausch & Lomb Optical Co.: Rochester, NY, 1917. Paperback. Illus., 10 x 6.5", pict wraps, 126pp + index, covers rubbed and darkened, spine ends rough and torn, contents used with some finger soiling, inner hinges reinforced with cloth tape; cover title: "Projection Apparatus" More