There are 3 Sikorsky S-39-C 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.
N50V
1931 Sikorsky S-39-C
Polk City, FL
N58V
Sikorsky S-39-C
American Canyon, CA
N809W
Sikorsky S-39-C
Jackson, WY