This is interesting. I think that it makes the plane look a bit fake, almost like a model, while increasing the contemporary effect of the jeep. You are right about tones, of course. All the early colour film in general use favoured red and yellow far too much - but that's how Kodak did things until Fuji frightened them. But you have got really close - especially with the boxes in the jeep where the half tones come in to play. If I can waste your time, I would suggest you find a less bold angle for a plane pic to take some of it's dominance out of the image. But having said all this, you should put this on a post card. It is a lovely job. Photoshop gets better and better and I know it a bit thanks to my work; but I don't think it can truely match the combinations of the chemicals that made the "slides". As for original pix - look out the three volumes of snaps by the genius Charles E Brown - who I am sure you know. He knew what he was doing. I am fortunate to possess a small number of mono prints he made himself. A colleague of mine knew him...but couldn't offer any interesting anecdotes. As a final aside, I snapped an M3 half-track in the Beltring arena two years ago and a mixture of luck and design gave me one of those propaganda or company publicity type pix of the day and I've often considered mucking about with the colours to make it more WW2-ish. Keep on going...