There are 3 Sikorsky S-55 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 1953 and 1957.
N752A
1957 Sikorsky S-55
Franklin, KY
N2300Z
1954 Sikorsky S-55
Jefferson, GA
N111VA
1953 Sikorsky S-55
Polk City, FL