Original electrical trade vintage catalog for PARTRICK & WILKINS COMPANY, was located at 51 North 7th Street, Philadelphia, PA. Manufacturers of Electrical Signal Device. Return Call Annunciator Button, Bell, Buzzer, Par-Wil Musical Chimes and Tubular Chimes. Disbound from a large 1938 electrical construction materials book, this unique old two page technical brochure would display wonderfully matted and framed. A marvelous addition to your retro electric equipment library.