There are 3 Sikorsky S55B 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 1954 and 1957.
N616Z
1957 Sikorsky S55B
Franklin, KY
N855TC
1956 Sikorsky S55B
Franklin, KY
N1255T
1954 Sikorsky S55B
Franklin, KY