I realize this isn't a weighty issue for anyone, but I am hoping someone will take the trouble to explain something that I've been wondering about for some time. My favorite editions of Tom Sawyer are from Heritage Press. I have several copies. I like the Rockwell illustrations. I've noticed that the title pages sometimes read "The Adventures of Tom Sawyer" by Mark Twain, while in other copies it reads, Samuel L. Clemens "The Adventures of Tom Sawyer" ......... no mention of Mark Twain anywhere. Can someone tell me why the difference? I have noticed older editions of other works of Twain occasionally using the Clemens name instead of Twain, and assumed this was a publisher trying to get around paying royalties or an estate thing with Twain's heirs, but why the same publisher would use both names in different print runs I can't understand. Thanks, Jerry