There are 5 Piper PA-12S 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 1946 and 1947.
N48MR
1947 Piper PA-12S
Whitefish, MT
N78474
1947 Piper PA-12S
Sheridan, WY
N2262G
1946 Piper PA-12S
N2386M
1946 Piper PA-12S
Fort Collins, CO
N3905M
Piper PA-12S
Ketchikan, AK