On August 16, 1951, service on Segment 7 of Air Mail Route 107 was inaugurated. This segment started at Tulsa, the western terminal of Segment 6, and operated northward via Bartlesville, Coffeyville and Topeka to the terminal point of Kansas City.

This cover was carried on the inaugural Air Mail Route 107 flight from the Kansas City, Missouri Airport Mail Facility to Tulsa, Oklahoma (where it was backstamped) and is listed in the Contract Air Mail Flights (CAM) Section of The American Air Mail Catalogue as 107S39f.

On October 26, 1986, Ozark Airlines was merged into the operations of Trans World Airlines. TWA had been Ozark Airlines’ primary competitor at its Saint Louis hub. At the time of the acquisition, the two carriers operated almost three-quarters of the flights to and from that airport.

In January 2001, TWA filed for a third and final bankruptcy and was acquired by American Airlines. American Airlines laid off many former TWA employees after the September 11, 2001 attacks. TWA continued to exist as an LLC under American Airlines until July 1, 2003. American Airlines closed the St. Louis hub later that year.