This primary source comes from the Records of the Office of the Chief Signal Officer.
National Archives Identifier:
524592Full Citation: Carver Hospital, Washington, D.C. Interior view; 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/carver-hospital-washington-dc-interior-view, December 3, 2023]