[hackermailman]

Every prison mailroom is different, I usually just ignore what the bop or state website claims and phone the prison mailroom directly to ask. In general, all books must come from a store/publisher, and have an invoice. I use Books A Million for prison deliveries because they always include an invoice and Amazon often doesn't.

Anybody wondering some good books for prison are the Little Schemer series of books, since they can be done with pencil & paper. The Schemer's Guide is another pencil & paper boook if you can find it. Kernighan also has a good book for this but it contains a chapter on cryptography which some prisons may not allow but I haven't had any problems yet "Understanding the Digital World: What You Need to Know about Computers, the Internet, Privacy, and Security" or get the older paperback version "D is for Digital". They give an intro to programming. Code by Charles Petzold, a really good intro book, may not get in either just because of the title.