Warbird Information Exchange

In the early 1970's I bought a set of 12 or 15 small black and white photo reprints of civilian registered Timm N2T-1's from an ad probably in the back pages of an Air Progress or Air Classics. I'm thinking it was the Aviation Photo Exchange or from Leo J. Kohn (are these one and the same?).

They were nice clear poses and I've never seen the same published anywhere since.

Did anyone here ever buy sets of photos from this source?

If any WIX posters built a collection of these I would be interested in hearing from you.

I am especially interested in early postwar photos of civilian registered Fairchild AT-21's.

If anyone ever bought any of the PT-19, BT-13/15, or Waco UPF-7 sets I am looking for 1946-1947 era photos of these aircraft from my late father's old logbook (Phoenix & Prescott, AZ and Las Vegas area flying) :

PT-19 N57146

BT-13 N67372

BT-15 N67302

Waco UPF-7 NC29906

other entries: AT-6 N59637 (later this number was on a Stearman); Fairchild PT-? N48800; Fairchild PT-? N63120 (Van Nuys); AT-6 N59604 (L.A., 1949).