| http://www.w3.org/ns/prov#value | - Historical narratives, reports, photographs, and other records that document administrative, technical, and tactical activities of the Air Service in the American Expeditionary Forces during World War I. Roll: 0051 Series: N Series Description: First Army Material Volume: 10 Volume Description: Histories of 49th and 139th Aero Squadron Operations Original data from:The National Archives
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