To make sure books aren't rejected and destroyed, books:

• Must be sent via USPS.
• Must be sent via reputable publishers/booksellers (i.e. not independent sellers who work through, for example, Amazon. The book must be bought and shipped from Amazon the monolith, not a mom n' pop seller operating on their platform...). Check out Powell's as an alternative to Amazon.
• Now may be used and either paper or hardback!  Just make sure they are clearly sent by a reputable book seller.  Thrift Books and Better World Books both have good bargains and use their own plastic envelopes with bookseller name all over them.
• Do not send more than 3 books at a time. 
• A return address is mandatory, and must be the address of a bookseller, not an individual.

Have bookseller mail three books only, via UPS only, to:

MICHAEL FOSTER, #51974 

MISSOURI RIVER CORRECTIONAL CENTER

P.O. BOX 5521

BISMARCK, ND 58506