All good suggestions.
If mine come bent (which they often do because my mailman apparently can't read "Do Not Bend") I just put them in a frame. The fold will either flatten out, or be extremely hard to see.
Of course, let's say you don't want to frame it. Let's say you want to albumize (Is that a word

) them. The weight from the album pages should help to make the photo flat.
The heavy book idea is also good. However, you need to be careful when doing this. If the degree fold is to severe, then applying that kind of weight will cause the picture to
crease which will make the photo be permanetly damaged.
As for the iron... I had never heard of the method, but it makes sense when you think about it.
Of course, the choice is entirely up to you.
--Daniel
