His best known book he authored with his wife Ida Mae,
Pigs in the Parlor (ISBN 0892280271, 1973) published by Impact Books. This book became a manual for deliverance from demonic spirits. The book has been in continuous printing since it was originally published and is claimed to have sold over 1,000,000 copies worldwide. Dr. Emily A. PardueIt listed it as suggested reading for Ashland Theological Seminary students in 2006.
Hammond is also the author of
Demons and Deliverance in the Ministry of Jesus (ISBN 0892280018, 1991), described by the publisher as "a sequel to
Pigs in the Parlor" He is also credited with authoring
- Kingdom Living for the Family (ISBN 0892281006)
- The Saints at War (ISBN 0892281049)
- Overcoming Rejection (ISBN 0892281057)
- The Breaking of Curses (ISBN 089228109X)
- Comfort for the Wounded Spirit (ISBN 0892280778)
- Manual for Children's Deliverance (ISBN 0892280786)
- Soul Ties