L Frank, author of the novel The Wonderful Wizard of Oz - crossword ... Today's crossword puzzle clue is a general knowledge one: L Frank, author of the novel The Wonderful Wizard of Oz. We will try to find the right answer to this particular crossword clue. Here are the possible solutions for "L Frank, author of the novel The Wonderful Wizard of Oz" clue. It was last seen in British general knowledge crossword.