Certificate of Commission issued to Hamilton Coolidge, September 29, 1917. Acknowledges Coolidge's receipt of a commission to be 1st Lieutenant in the Aviation Section of the Signal Officers' Reserve Corps of the Army of the United States.
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.
Special Orders No. 123, Headquarters American Expeditionary Forces, October 11, 1917. Assigns 1st Lieutenant Hamilton Coolidge to active duty and requires that he reports to the Commanding Officer of the Aviation Detachment at Issoudun, France. One…
Special Orders No. 21, Headquarters 3rd Aviation Instruction Department, November 3, 1917. Gives several orders to men in the 3rd Aviation Instruction Department, including assigning 1st Lieutenant Hamilton Coolidge as the commanding officer of the…
Letter from the Depot of the Quartermaster for the American Expeditionary Forces to Hamilton Coolidge, November 7, 1917. References Hamilton Coolidge's Final Statement, which was incorrect and needed to be amended. The amended Final Statement is not…
Special Order No. 104, Headquarters Lines of Communication, American Expeditionary Forces, November 20, 1917. Revokes another order for Hamilton Coolidge and three other 1st Lieutenants to proceed to the 7th Aviation Instruction Center. One typed…
Special Orders No. 60, Headquarters 3rd Aviation Instruction Center, December 1, 1917. Gives orders to several officers at the 3d Aviation Instruction Center at Issoudun, France. Includes orders for 1st Lieutenant R. [sic] Coolidge to be detailed to…