Catalogue of O.D. Pierce & Co. manufacturers of and dealers in electrical supplies ... (1893)
O. D. Pierce & Co. · O. D. Pierce & Co. · leaf 55
No. 20, 5 Ampere 21, 10 M \ ...... In ordering give No. of switch as well as capacity in amperes, … $ 384o O. D. PIERCE A CO., PHILADELPHIA, PA. SWITCHES. PERKINS SNAP SWITCHES. Double Pole*