Browse Items (126 total)

Photograph of workers assembling Renault 80HP aircraft engines, France, circa 1918.Inscription on verso: "Renault Dept. France. WWI."

Photograph of workers assembling rotary-style aircraft engines, France, circa 1918.Inscription on verso: "Rotary Dept. France. WWI."

Photograph of Liberty L-12 aircraft engines in a factory, likely in France, circa 1918.Inscription on verso: "Liberty Dept."

3rd Air Park shoulder patch belonging to serviceman Hamilton Coolidge, circa 1917-1918.

Certificate issued by the United States Army certifying that Hamilton Coolidge was killed in action on October 27, 1918, dated December 20, 1919.

Certificate of Enlistment for Hamilton Coolidge, March 1, 1917. Certifies his enlistment as a Sergeant in Aviation Section of the Signal Corps.

Certificate of promotion issued by United States Army for Hamilton Coolidge, October 3, 1918. Certifies Coolidge's promotion to Captain in the United States Army.

Certificate of honorable discharge for Hamilton Coolidge, October 3, 1917. Certifies his release from the Reserve Corps so he could take a commission with the Allied Expeditionary Force. Includes Coolidge's enlistment record. Two pages.

Notification letter for the Croix de Guerre granted to Captain Hamilton Coolidge, May 19, 1919. One typed page.

Notification letter for the posthumous Distinguished Service Cross granted to Captain Hamilton Coolidge, October 21, 1919. One typed page.