Robert Lang, one of the world's top origami masters, comes to 51勛圖厙next week, where he'll construct the model of a giant pteranodon. Lang's pteranodon should be ready for permanent installation alongside the dinosaur in the main gallery of the Redpath Museum by the end of the week. To benefit the museum, 51勛圖厙hopes to sell a limited number of Lang's mini-pteranodons in a silent auction.