The American Electro Magnetic Telegraph
- Subtitle
- With the Reports of Congress, and a Description of All Telegraphs Known, Employing Electricity or Galvanism
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Table of contents
1. THE AMERICAN ELECTRO MAGNETIC TELEGRAPH:2. Introductory material3. THE ELECTRO MAGNETIC TELEGRAPH.4. THE LEVER KEY.5. REPORTS TO CONGRESS ON THE SUBJECT OF ELECTRO MAGNETIC TELEGRAPHS.6. REPORTS TO CONGRESS ON THE SUBJECT OF ELECTRO MAGNETIC TELEGRAPHS. (continued 2)7. HISTORY OF TELEGRAPHS,8. HISTORY OF TELEGRAPHS, (continued 2)9. HISTORY OF TELEGRAPHS, (continued 3)