There are 5 Waco YQC-6 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.
N15705
1936 Waco YQC-6
Fredericksburg, TX
N15722
1936 Waco YQC-6
Piqua, OH
N16205
1936 Waco YQC-6
Port Townsend, WA
N16212
1936 Waco YQC-6
N16229
1936 Waco YQC-6
Rockford, IL