This primary source comes from the Records of the Office of the Chief Signal Officer.
National Archives Identifier:
529972Full Citation: Zouaves, 9th N.Y. Volunteer Infantry; ca. 1860 - 1865; Mathew Brady Photographs of Civil War-Era Personalities and Scenes, 1921 - 1940; Records of the Office of the Chief Signal Officer, Record Group 111. [Online Version, https://docsteach.org/documents/document/zouaves-9th-ny-volunteer-infantry, May 2, 2024]