There are 4 Maule M-4-180C 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 1971.
N40303
1971 Maule M-4-180C
White Salmon, WA
N2064U
1970 Maule M-4-180C
Fairbanks, AK
N2029U
1968 Maule M-4-180C
Rogersville, AL
N2062U
Maule M-4-180C
Woodstock, GA