Jetmech
Squadron's O-1 Birddog in Action has one pic of an OE-1 (O-1A) Birddog on page 16. There is also a painting on the back cover.
There is also a section in the book on the OE-2 (O-1C) which was exclusive to the Marines. Had a slightly different configuration.
But alas, no Navy birds are represented. Although they do have a write up, with pics, on one that landed on the USS Midway by a Vietnamese Air Force pilot, Major Boung, with his family on board.
Randie