| Author: | Robinson, Stephen L. (Telegrapher) |
| Subject: | HE, Cipher and telegraph codes -- Grain trade |
| Format: | Electronic text |
| Date issued: | 2015 |
| Language: | English |
| Publisher: | Project Gutenberg, |
| Rights: | Public domain in the USA. |
| Download link: | The Robinson Telegraphic Cipher [electronic resource] / Stephen L. Robinson |