There are 3 Waco EQC-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.
N16214
1936 Waco EQC-6
Poplar Grove, IL
N16500
1936 Waco EQC-6
North Olmsted, OH
N16591
1936 Waco EQC-6
Spokane, WA