Mark Bryant 
Dictionary of Riddles [PDF ebook] 

Originally published in 1990 by Routledge, Dictionary of Riddles is a collection of nearly 1500 of the most cryptic and entertaining riddles from history. Drawn from sources throughout the world, the collection ranges from earthy medieval jokes about fleas, worms and vegetables to the sophisticated puzzles composed by literary figures from Schiller, Swift, Voltaire, Rousseau and Cervantes to Edgar Allan Poe, Lewis Carroll and J.R.R. Tolkien. The book traces the history of riddles from their origins in antiquity through the golden age of the Renaissance, to their decline into the nursery and the first few signs of their modern revival, and draws together all the strands of the riddling art. Dictionary of Riddles received a Special Commendation in Reference Review’s Best Specialist Reference Books of 1990 Awards.