A map of the locations (with dates) of medical units of the 1st Division, American Expiditionary Force, in the Ansauville Sector, January 15-April 3, 1918 From The Army Medical Department in the World War Volume VII: Field Operations, Washington, DC: USGPO, 1925 http://history.amedd.army.mil/booksdocs/wwi/fieldoperations/ch9plt2.pdf archive copy at the Wayback Machine

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