trading in books Trading in books September 17, 2015 by Star Cat Books | Leave a Comment #1 Rule for trading in books at my bookstore (and any bookstore) Do not bring in books that are water-damaged or have water on them. They will develop book mold. Book mold spreads faster than cancer. The spores can infect everything near to them, including other books. I got in books just now stored in a bag […] Read more » book mold trading in books