The old terminal building and control tower at KOSU, which dated to the airport's opening during World War 2. Both were demolished in 2017, replaced with the new Austin E. Knowlton Executive Terminal and Aviation Learning Center.

KOSU's new terminal building, officially known as the Austin E. Knowlton Executive Terminal and Aviation Learning Center, which opened in 2018.

Displayed at the Austin E. Knowlton Executive Terminal & Aviation Learning Center at KOSU, which opened in January of 2019. This Cub is a genuine piece of local aviation history; she was bought by Northway Flying Service in 1940, and served as a trainer during WW2, flying out of Norton Field, Columbus' first airport. Postwar, bought by Harley Snook, and flown from his grass field, Snook Airport in nearby Reynoldsburg. Restored by Mr. Snook and a former student of his from 1992 to 1995. Donated to OSU by Mr. Donald Peters, a former TWA pilot, and placed on display in January 2019.

Seen when owned by the Ohio State University, this DC-3 was delivered to American Airlines on August 30, 1939 as DST-217A NC21753 "Flagship Memphis". Served in the USAAF as C-49E 42-43620. Other regns include N139D.

Operated by Ohio State University. Later sold to Air Sunshine and destroyed on January 15, 1977 trying to return to the Miami airport after developing engine trouble on take off. Other regns were NC28321, N73B, N477B and N73KW.

Owned by the State of Ohio Department of Commerce and was later painted with the State of Ohio flag on the tail. Built as C-53-DO 41-20095, later regns include OY-DCE, N9959F and N34DF.

Originally delivered to KLM in 1948 as PH-TEG, and seen here when owned by Industrial Nucleonics. Among the other regns worn by this well travelled 240 were PH-CEG, N9820F, N9826F, N618S, N2510C, XB-FIS, N240DW and XB-AZM.