There are 19 Porterfield CP-65 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 1940 and 1941.
N34726
1941 Porterfield CP-65
Port Townsend, WA
N34814
1941 Porterfield CP-65
La Center, WA
N37703
1941 Porterfield CP-65
Port Orange, FL
N37714
1941 Porterfield CP-65
Athens, GA
N37743
1941 Porterfield CP-65
Richland, WA
N37862
1941 Porterfield CP-65
Excelsior, MN
N25453
1940 Porterfield CP-65
Westminster, CA
N25499
1940 Porterfield CP-65
Randolph, WI
N25540
1940 Porterfield CP-65
Santa Paula, CA
N25542
1940 Porterfield CP-65
Garrison, ND
N27280
1940 Porterfield CP-65
Los Alamitos, CA
N32428
1940 Porterfield CP-65
Harrod, OH
N25539
Porterfield CP-65
Key Largo, FL
N25590
Porterfield CP-65
Upland, CA
N27207
Porterfield CP-65
Richland, WA
N27217
Porterfield CP-65
Guthrie, OK
N37708
Porterfield CP-65
Ford, WA
N37709
Porterfield CP-65
Rhinebeck, NY
N37716
Porterfield CP-65
Saint Cloud, FL