There are 3 Piper PA-31-300 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 1968 and 1969.
N6598L
1969 Piper PA-31-300
Mechanicsburg, PA
N411CF
1968 Piper PA-31-300
Arlington, VA
N9215Y
1968 Piper PA-31-300
Niles, MI