lol..I feel your pain....I think they keep their photos so we buy their books
I'll comment on the Leaman photo you reference....the caption actually states "it is "possible" that the triplane nearest the camera is 477/17." He doesnt claim it to "be" 477/17. My guess is that even with the original photo, you'd not be able to positively identify that plane. So it's almost irrelevant.
Good luck with your project...maybe others will bite
And..thanks for the kind words
