[Letter to Commanding Officer, 3rd Aviation Instruction Center, from 1st Lieutenant Hamilton Coolidge, March 28, 1918]

Letter to Commanding Officer, 3rd Aviation Instruction Center, from 1st Lieutenant Hamilton Coolidge, March 28, 1918. Letter was written in an effort to retain Corporal Louis Dardenne, a French mechanic working at the Instruction Center. One typed page.

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