National Telegraphic Union · New York : N.T.U. · leaf 269
er, Register and Key, MANUFACTURER AND DEALER IN ALL EJNDS OF TELEGRAPHIC INSTRUMENTS. Batteries, and all kinds of Telegraphic Supplies, constantly onhand. AS-Switches made to order. All articles used by Telegraphersfurnished on most reasonable terms. IsM20 BROOKS PATENT PARAFFIN! INSULATOR WORKS,… … All varieties of Insulatorsmanufactured at these Worksare warranted to excel theusual style of Glass and Rub-ber more than one hundredfold. In view of the errorand delay in transmission,waste and consumption ofbattery material, the resultsof defective insulation, its fra-gile nature and expense of…
Telegraph
Internet Archive · Boston Library Consortium · Public Domain Mark 1.0. Free to use for anything.
![An illustration from The Telegrapher [microform], 1864, leaf 269](https://img.insideoutlibrary.com/img/1024/ia-telegrapher05nati-269-176.webp)
![An illustration from The Telegrapher [microform] (1864)](https://img.insideoutlibrary.com/img/200/ia-telegrapher04nati-415-197.webp)
