There are 4 Piper PA-18S aircraft on the U.S. registry that TailWiki has a page for. Every one is built from the public FAA record — year, serial, engine, home base, and registration history — and owners and pilots add photos, trips, and stories on top. The ones listed here were built between 1949 and 1955.
N1889P
1955 Piper PA-18S
Hood River, OR
N951EL
1951 Piper PA-18S
Cordova, AK
N132MR
1950 Piper PA-18S
Portland, OR
N90569
1949 Piper PA-18S
North Pole, AK