What follows is a guest post by Steven Hales (Bloomsburg University of Pennsylvania) My parents are antique dealers, and if there is one thing that I have learned from them, it is that people will collect anything: coins, stamps, Tiffany lamps, Victorian salt shakers, gasoline pumps, barbed wire, automobiles, rocks, fossils, Coca-Cola advertising, airline barf bags. I collect rare books. When I was in philosophy grad school at Brown I met Dan Knowlton, the university’s on-staff hand bookbinder, and wound up taking private bookbinding lessons from him for two years. I’ve been a serious hobbyist binder ever since. So I have first-hand knowledge of the kinds of interventions bookbinders do, and what they hope to achieve as a result. Here are a few thoughts about the types of value that collectors are interested in and how restorers (especially bookbinders) maximize or minimize those values.