APA (7th ed.) Citation

United States. Army. Signal Corps. (1874). [Signatures of enlisted men on official communications to Signal Office]. [publisher not identified].

Chicago Style (17th ed.) Citation

United States. Army. Signal Corps. [Signatures of Enlisted Men on Official Communications to Signal Office]. [Washington]: [publisher not identified], 1874.

MLA (9th ed.) Citation

United States. Army. Signal Corps. [Signatures of Enlisted Men on Official Communications to Signal Office]. [publisher not identified], 1874.

Warning: These citations may not always be 100% accurate.