Piper PA-18 Super Cub examples at National Air & Space Museum’s Udvar Hazy facility, Duxford, Monroe, Sequim, Renton and Arlington.
1953 Piper PA-18-105 SPECIAL #18-2425
Arlington Airport 2018
1950 Piper PA-18 #18-134
Sequim, Wash. 2017
Piper L-21B #54-2388
also listed as PIPER PA-18-135 #18-3588