first sale doctrine. You would only run into a problem if the images were protected under copyright (which we seriously doubt) and you were duplicating those images (that is, making copies). BTW, we talked about the first sale doctrine in a previous post.
Why don't we believe these scraps are protected by copyright? According to this site, Victorian paper scraps appeared at the beginning of the 19th Century initially in black and white or color (if hand-tinted). Color printing of these scraps began in the late 1930's. Because of these dates, chances are very strong that these works are in the public domain (see this chart for more details) either because copyright expired or was never renewed. In any case, determining whether copyright exists is an academic exercise as your use is permitted by the first sale doctrine and does not violate copyright law.