There are 6 Wing D-1 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 1967 and 1984.
N8602K
1984 Wing D-1
Wilmington, DE
N8602S
1982 Wing D-1
Rochester, NY
N8601A
1980 Wing D-1
Waterloo, WI
N644W
1967 Wing D-1
Argyle, TX
N7597V
Wing D-1
Santa Rosa, CA
N8601X
Wing D-1
Uvalde, TX