The more I look at this site, the more amazed I become! Cherrypicking some of the best ones:
Image 284 - Yak-1, Yellow 6, in black/green camouflage, with skis and dropped flaps - appears that the tail and fuselage stars are partially overpainted, but this could just be due to poor contrast between the green and the red of the insignia.
Image 621 - I-16 typ 5, White 11, appears to have a red cowling, judging from similar contrast of fuselage star with fuselage main colour
Image 672 - in COLOUR!!! I-16 typ 10, hard to be sure, but maybe Red 14 on the tail? Red cowling face. Ignore the ugly contraption in the background!
Images 1071 and 1073 - two shots of the same aircraft, it appears! An early I-16 (typ 4?) in pre-war "silver-grey"; it looks like the black cowling has been overpainted in white. The rudder is either a colour between white and grey (yellow?), or else it just looks lighter than the fin because it's angled slightly to the camera and reflects the light differently. There appears to be a numeral 1 on the rudder, either overpainted or in a pale colour slightly darker than the rudder itself. Too bad the rudder doesn't show in the second shot!
I could go on and on...?
Can anyone tell if the owner of this amazing collection is willing to sell prints of some of the images? To have photographic (not digital)copies of the originals might make some of the details easier to judge!
John Thompson