Hiram Percy Maxim and Clarence D. Tuska

“ All kinds of wireless apparatus, including 80 watt dynamo, one to one transformer for audion amplifier, audion attachments, etc. Am in need of head-set, loose-coupler, variables, etc. Write me what you want or need. J. W. Holligan, 328 East 19th St., New York, N. Y.
FOR SALE—The best text book of wireless telegraphy. Written by Dr. Zenneck. The book is noted for its wonderful illustrations and is an authority on the subject. The Officers of the League can recommend no better book. ”

“ FOR SALE—Four inch Mesco spark coil in excellent condition. Justus Agnoli, 16 Purvis St., Long Island City, N. Y.
FOR SALE OR EXCHANGE—One type B crystaloi detector in good condition, $2.25; 100 ampere, 600 volt Lightning Switch, parts, less base, $1.50. Wanted; Blitzen or Murdock 43 plate rotary variable condenser. W. A. Meyer, L382 N. 13th St., Sheboygan, Wis.
WANTED—Clapp-Eastham Blitzen receiving transformer and variable condenser. Price must be reasonable. Murdock detector for sale or trade. H. D. Mattox, 260 West 11th St., Pomona, Calif. ”

“ FOR SALE: I have for sale one 1/20th H.P. Emerson Induction motor, 1760 R.P.M. Operates on 110-60 cycles. Is in first-class condition; has just been overhauled, and looks like new. Will sell for reasonable price. ”

“ BARGAINS—One Bulldog 1′′ spark coil without vibrator, $2.00; one commercial $5.00 key, $1.00; one 3⁄4 K. W. Thordorson transformer (cost $18.00) , $9.50. Must sell quick. W. J. King, 462 Pine St., New Orleans, La.
EXCHANGE—1 K. W. Clapp-Eastham transformer for 1⁄2 K. W. Thordarson with variable condenser to boot. Write me your wants. ”

“ WANTED—Will pay cash for a 1-16 H. P. 110 volt A. C. motor with 1⁄4-inch shaft. Must be reasonable and in first class condition. Have a 1⁄4 KW. Clapp-Eastham transformer which has record of 250 miles; will sell for $8.50. ”

“ FOR EXCHANGE—110, V. D. C. motor for 110 or 220 V. A. C. motor or anything of equal value. Motor is in practically new condition, and is suitable for rotary gap. A. Saenz, 146 West 65th St., New York. ”

“ First good offer takes it. Other materials also for sale. Harold Burhop, 1945 N. 7th St., Sheboygan, Wis.
FOR SALE—Wireless set consisting of loose coupler set, with detector and condenser on base; 1 pr. Murdock phones; 1 Mesco key, value $2.00; 1⁄2′′ spark coil, wire and switches, Price $10.00, or will exchange for a wheel. Frank Cummings, 2132 Washington Ave., Bronx, N. Y.
FOR EXCHANGE—One Colby receiving transformer, $5.50; one 1′′ spark coil; and one electrolytic interrupter. Wanted: Murdock or Blitzen variable. Geo. M. Hearne, Carthage, Ill. ”