Posted By:
davidcyclebackPaul Thompson is a well known photographer and the other stamps you listed are all legitimate.
One of the keys to judging photographs (age, originality or lack thereof) is looking at the stamps and knowing what they mean. All the stamps and tags you've mentioned are consistant with your photos being original and legimate. The sell price will depend on the image quality and photo condition, but no one ever had any trouble selling a Babe Ruth baseball photo with an International News Photos stamp and BBM/Christie's tag-- as both these prove the the intelligent buyer that the photo is vintage. So, if you're hoping to sell the photos, you're in good shape.