There are 5 Smith MINIPLANE 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 1964 and 1974.
N11911
1974 Smith MINIPLANE
Eastsound, WA
N1160H
1971 Smith MINIPLANE
Morton, IL
N160F
1966 Smith MINIPLANE
Torrance, CA
N215K
1966 Smith MINIPLANE
Laurel, MD
N12312
1964 Smith MINIPLANE
Kewanee, IL