Or, during a well-ventilated place, spray it with lighter fluid (Ronsonal), wait five seconds, Book rub with a cloth or plant disease (or cotton flat, which I find works best). I've used this system literally many times without a problem: the surplus fluid evaporates during a jiffy and leaves no residue. My child wrote in crayon... any hope? Unlike ink, which penetrates the paper, crayon marks are at the surface.Try very fine wire wool (0000 grade). Gentle rubbing will usually remove, or minimize, the crayon marks without causing harm to the paper. (As with any cleaning method, practice on a book you do not care about Christianity Book.)