There are 6 Interstate S-1A-90F 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.
N37383
1942 Interstate S-1A-90F
Arvada, CO
N37393
1942 Interstate S-1A-90F
Callicoon, NY
N37395
1942 Interstate S-1A-90F
Horton, KS
N37429
1942 Interstate S-1A-90F
Poulsbo, WA
N37382
1941 Interstate S-1A-90F
Dover, DE
N37398
Interstate S-1A-90F
Castleton, NY