This is what is at the NMUSAF.
The civilian production Model 24-C8F on display (civil registration number NC16817) served in the CAP at Coastal Base 2, Rehoboth, Delaware, during WWII. The wartime owner of this airplane, CAP 1Lt. M.M. Wilder, was awarded the Air Medal for his service at Coastal Patrol Base 2. This aircraft has been repainted as it was while flying for the CAP. It was donated to the museum in 1991 by Lt. Col. George L. Wiess, USAF (Ret.), Fort Washington, Md.
And also this.
The J-3 on display is further identified as a J-3C-65-8 indicating it is a J-3 aircraft powered by a Model 8 Continental A-65 engine of 65 horsepower. It is painted in the widely known Piper "Cub yellow". The aircraft on display was donated in 1971 by the Greene County Composite Squadron, Civil Air Patrol, of Xenia, Ohio.
These pics are from the web site. I hope it helps.