There are 6 Monocoupe 90AL-115 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 1941 and 1949.
N87621
1949 Monocoupe 90AL-115
Parrish, FL
N87618
1948 Monocoupe 90AL-115
New Castle, DE
N97Y
1948 Monocoupe 90AL-115
Maryland Heights, MO
N38905
1941 Monocoupe 90AL-115
Dayton, OH
N38922
1941 Monocoupe 90AL-115
Van Nuys, CA
N369H
Monocoupe 90AL-115
Ellsinore, MO