There are 7 Piper L-4B 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 1942 and 1954.
N5869V
1954 Piper L-4B
Sonoma, CA
N58473
1943 Piper L-4B
Greensboro, MD
N9649H
1943 Piper L-4B
League City, TX
N3974A
1942 Piper L-4B
Udall, KS
N194L
Piper L-4B
Naperville, IL
N49844
Piper L-4B
Utica, KY
N9095C
Piper L-4B
Clarkston, WA