This primary source comes from the Records of the Immigration and Naturalization Service.
National Archives Identifier:
296434Full Citation: Letter from German Hospital to Commissioner of Immigration, Angel Island Station, regarding enemy alien Ernst Hamann; 10/12/1917; Records of the Immigration and Naturalization Service, Record Group 85. [Online Version, https://docsteach.org/documents/document/letter-from-german-hospital-to-commissioner-of-immigration-angel-island-station-regarding-enemy-alien-ernst-hamann, May 4, 2024]