A boxed action book (see Mr. Baller's Hoppy the Hopper, 1953) tells of Pop-in's adventures as he strays from home and is glad to get back. The gadget involved is a piece of celluloid with a picture of Pop-in on the end, which jumps through holes in the pages and is manipulated by a small cord in the back. This will sell, but not to us. We've had too many strings to pull already!