Subject: Re: Removing Grease Pencil Marks On Books
Try using a DRY soft cloth--towel or old fashioned diaper and rub, rub, rub
in a circular motion.
Sometimes Goo Gone will do it but do a test spot first.
An artist gum eraser like the brand Magic Rub (I get mine at a craft store),
is another good try on inside pages.
Isa