To keep this as simple as possible. I own four photographs that were taken in the late 1920's. They don't have any copyright information, and they are not marked. They are "wire photos" that were transmitted to a news service. If the 70 year copyright term rule is correct, then I can make copies of these, posters, or whatever use I want? I want to enlarge them and try to sell copies? I searched all over the web and just can't seem to find a solid answer. It appears that the original copyright has expired?