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HankronScott, I will try to include identification (including how stamped, if reprinted, etc) as often as I can .... News services and other major photography organizations will be worked on down the road.
A year or so ago I wrote a book on collecting 20th century photography, but never issued it as I didn't think it would sell at all. Having not done much of anything useful since then, I decided I would expand it and perhaps put it online. One of my personal areas of interest has long been vintage movie photographs, but I've never offered much on this area. I even hope to include a guide to dating snapshots.
Other than becoming a better buyer and seller, there's no money in this type of research. It basically keeps me out of trouble. Whenever I do this type of stuff, I end up learning tons myself.