Found an interesting site today - motorsport archive. You can save the pics and they aren't bad quality. There is even a photo of Dick in his Torana from 1973. They do have captions on them, but you may be able to get hold of the contributor. Also a site called webshots -again they are personal photos posted by people and you can save them. Don't remember if there were any DJ though.
The other good site is autopics, but youy have to buy them. They will send you a jpeg image or you can buy the photo. The jpeg is $20 and the photo is $25. The size is 8"x12", so they are a good size.
Good luck - I am sure there are many others, so if I fond any, I will keep you posted.