This primary source comes from the Records of the Office of the Chief Signal Officer.
National Archives Identifier:
524705Full Citation: Wounded soldiers in hospital; ca. 1860 - ca. 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://www.docsteach.org/documents/document/wounded-soldiers-in-hospital, November 9, 2024]