There are 4 Waco UKC-S 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.
N14606
1935 Waco UKC-S
Bremerton, WA
N14611
1935 Waco UKC-S
San Mateo, CA
N14617
1935 Waco UKC-S
Mt Pleasant, MI
N15214
1935 Waco UKC-S
Fort Myers, FL