There are 5 Interstate S-1A-65F 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 1942.
N37399
1942 Interstate S-1A-65F
Lebanon, MO
N37400
1942 Interstate S-1A-65F
Wilmington, DE
N37323
1941 Interstate S-1A-65F
Indianapolis, IN
N37361
1941 Interstate S-1A-65F
Burlington, ND
N37426
Interstate S-1A-65F
Rocklin, CA