There are 13 Piper L-18C 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 1951 and 1982.
N2703W
1982 Piper L-18C
Salmon, ID
N32721
1953 Piper L-18C
Lakeland, FL
N7238X
1953 Piper L-18C
Carson City, NV
N1637D
1952 Piper L-18C
Daniel Island, SC
N27363
1952 Piper L-18C
Muskogee, OK
N3134G
1952 Piper L-18C
Graham, TX
N33617
1952 Piper L-18C
Graham, TX
N917CS
1952 Piper L-18C
Big Springs, NE
N109SC
1951 Piper L-18C
Van Alstyne, TX
N10341
Piper L-18C
Decatur, GA
N121KH
Piper L-18C
Spruce Pine, NC
N4075A
Piper L-18C
Sandpoint, ID
N4080A
Piper L-18C
Culbertson, NE