We recently acquired a Gil Elvgren study sketch of a scene that was later used in a 1955 poster.  The sketch is very unusual because it was signed by Elvgren which was not a common practice at the time.  I think the comments on the sketch are also interesting. Reading them we know that in the days before Photoshop, the artist had to carefully plan the composition and layout of the artwork to account for the logos and slogans that would be used for the final print execution.  You can see from the final poster that there was considerably more space above the raft for the text.  The sketch and the finished poster should make a great display at the World of Coca-Cola some day.  ^TR