STANDARD BROS, Detroit, 1895, illus lamp in blue, on cover to Southington, Conn, with full back illus of different lamp in blue, back toned with large scrape in illus (Image)

Est. 35

JENNESS & MCCURDY, Detroit, 1898, illus "Plumwood" lantern, on tan cover to Amherstberg, Ontario, Canada, small tear at left, full back illus of Banner Oil Heater, tape stain in four corners o/w fine (Image)

Est. 40

CENTRAL BOILER WORKS, illus factory buildings, Detroit, 1906, cover addr to Canal Zone, full back illus of boiler (Image)

Est. 30

STEEL MANTLE LIGHT CO, Adrian, 1925, illus lamp in black, on cover to Denver, clipped at lower right o/w fine (Image)

Est. 30