There are 4 Bensen B-8M 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 1969 and 1971.
N4938
1971 Bensen B-8M
Hawley, MN
N7195
1971 Bensen B-8M
Franklin, WI
N6220
1970 Bensen B-8M
Mayflower, AR
N1859
1969 Bensen B-8M
Oak View, CA