Inside Out Library · Explore
The Telegrapher [microform] (1864)
National Telegraphic Union · New York : N.T.U. · leaf 12
![An illustration from The Telegrapher [microform], 1864, leaf 12](https://img.insideoutlibrary.com/img/1024/ia-telegrapher04nati-12-6.webp)
Fig. 2Telegraph
Internet Archive · Boston Library Consortium · Public Domain Mark 1.0. Free to use for anything.
More pictures from The Telegrapher [microform]
More like this
![An illustration from [Electric engineering.] (1902)](https://img.insideoutlibrary.com/img/200/ia-electricengineer03inte-451-275.webp)