There are 3 Pitts S-2S 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 1979 and 1982.
N1643
1982 Pitts S-2S
Hampton, GA
N99MF
1982 Pitts S-2S
Garden Plain, KS
N1PW
1979 Pitts S-2S
Garden Plain, KS