There are 22 Interstate S-1B1 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 1942 and 1993.
N30809
1993 Interstate S-1B1
Callicoon, NY
N3771Z
1943 Interstate S-1B1
Madison, OH
N46023
1943 Interstate S-1B1
Edgewood, NM
N46333
1943 Interstate S-1B1
Edgewood, NM
N46336
1943 Interstate S-1B1
Chicago, IL
N46962
1943 Interstate S-1B1
Fairbanks, AK
N47614
1943 Interstate S-1B1
Worland, WY
N48443
1943 Interstate S-1B1
Peyton, CO
N48616
1943 Interstate S-1B1
Sequim, WA
N48652
1943 Interstate S-1B1
Edgewood, NM
N48966
1943 Interstate S-1B1
Wickenburg, AZ
N49061
1943 Interstate S-1B1
Santa Rosa, CA
N53250
1943 Interstate S-1B1
Soldotna, AK
N48027
1942 Interstate S-1B1
Anchorage, AK
N2778Q
Interstate S-1B1
Huntley, IL
N43LG
Interstate S-1B1
Carleton, MI
N46243
Interstate S-1B1
Junction City, OR
N47513
Interstate S-1B1
Sterling, AK
N49105
Interstate S-1B1
Columbia Falls, MT
N52413
Interstate S-1B1
Wahpeton, ND
N537KT
Interstate S-1B1
Deer Park, WA
N6513C
Interstate S-1B1
Lyons, GA