WW I flying ace; an active champion for a strong independent air force, he was court-martialed for insubordination and suspended from duty for five years in 1925. TLS signed 'Wm. Mitchell,' one page, 6 x 7.5, 'Boxwood,' Middleburg, Virginia letterhead, no date. In part: 'I am glad to send you my autograph herewith, for your son Charles' collection.' Large, bold signature. In fine condition, with horizontal fold affecting two letters of the signature, light scattered toning, adhesive tape to top and bottom borders from a previous mounting. RRAuction COA.
