old Hawkins illustrated electrical guidebook, telegraph, early radio, lamps & lighting etc

Old engineer's Audel / Hawkins Electrical Guide #8 "Questions, Answers and Illustrations - Telegraph - Wireless - Bells - Lighting". It is copyright 1917 by Theo. Audel & Co., but is a 1924 - 1925 printing. This old handbook has over 330 pages with sections on telegraphs, wireless telegraphy (early radio ), early electric lighting and more! It is full of tons of illustrations, schematics and drawings.

We saw some really interesting sections on electric arc lamps, the different kinds of early light bulbs, light bulb filaments and early incandescent lamp bases, This has lots of great illustrations of early electric equipment.

It is in very nice condition with gilt edges to the pages.