Slonnie Slonniger in the cockpit of a Lincoln Standard (LS5) for Kansas City Airways. Short lived airline service between Kansas City and Wichita. In operation during June and July of 1925. Sloniger went on to become the first chief pilot at American Airlines holding seniority #1.
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Book: One Pilot's Log - The Career of E.L. "Slonnie" Sloniger