There are 5 Cougar 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 1958 and 1969.
N1594
1969 Cougar 1
Chewelah, WA
N2513
1967 Cougar 1
Enumclaw, WA
N91263
1966 Cougar 1
Port Orange, FL
N6801D
1958 Cougar 1
Albert Lea, MN
N1112Y
Cougar 1
Myerstown, PA