There are 26 Cessna O-2A 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 1966 and 1969.
N202AF
1969 Cessna O-2A
West Liberty, OH
N97632
1969 Cessna O-2A
Jackson, MS
N3219K
1968 Cessna O-2A
Burlington, WA
N5151A
1968 Cessna O-2A
Memphis, TN
N902A
1968 Cessna O-2A
Clifton, VA
N19GH
1967 Cessna O-2A
Virginia Beach, VA
N21387
1967 Cessna O-2A
New Braunfels, TX
N311J
1967 Cessna O-2A
Fairacres, NM
N424AF
1967 Cessna O-2A
Springboro, OH
N472LC
1967 Cessna O-2A
Dayton, NV
N5252C
1967 Cessna O-2A
North Logan, UT
N590D
1967 Cessna O-2A
Casper, WY
N594X
1967 Cessna O-2A
Friendswood, TX
N899AF
1967 Cessna O-2A
Cape Coral, FL
N202A
1966 Cessna O-2A
Wilmington, DE
N1156
Cessna O-2A
Lumber Bridge, NC
N1166B
Cessna O-2A
N Richlnd Hls, TX
N3018T
Cessna O-2A
Chandler, OK
N325MT
Cessna O-2A
Forestdale, MA
N469RC
Cessna O-2A
Carson City, NV
N469XC
Cessna O-2A
Carson City, NV
N5152D
Cessna O-2A
Encinitas, CA
N593S
Cessna O-2A
Port Townsend, WA
N5VN
Cessna O-2A
Addison, TX
N6530Q
Cessna O-2A
Brown Mills, NJ
N77GW
Cessna O-2A
Bolivar, MO