9780930323448 | Kendall Green, October 1, 1988, cover price $4.95 | About this edition: Entering a new school, Donald struggles with his learning disability and makes friends with a deaf boy who teaches him sign language and joins Donald in a search for a newspaper thief

9781563680458 | Gallaudet Univ Pr, December 1, 1995, cover price $24.01

9780801303227, titled "Psychology of Deafness: Understanding Deaf and Hard-Of-Hearing People" | Addison-Wesley Longman Ltd, August 1, 1989, cover price $52.75

9780930323660 | Kendall Green, April 1, 1990, cover price $4.95 | About this edition: While visiting his deaf friend, Matt, at school, nine-year-old Donald discovers something strange going on in the attic of Matt's dorm and becomes involved in the theft of a priceless necklace from a nearby museum

9780930323837 | Gallaudet Univ Pr, June 1, 1991, cover price $5.95 | About this edition: Learning disabled Donald and his deaf friend Matt are kidnapped by crooks who have stolen rare cockatoos from the San Diego Zoo, while his older sister is involved in a Hispanic boy's abuse by his father

9781883120016 | Northern State Univ Pr, August 1, 1993, cover price $5.95

9780205338139 | Prentice Hall, May 1, 2003, cover price $140.20

9780205454471 | Pck edition (Allyn & Bacon, July 13, 2004), cover price $105.33

9780133096286 | Psc edition (Prentice Hall, November 30, 2012), cover price $96.00

9780133096279 | Psc edition (Prentice Hall, June 2, 2012), cover price $133.33

9781138908130 | 2 revised edition (Psychology Pr, August 31, 2016), cover price $185.00

9781138908147 | 2 revised edition (Psychology Pr, August 31, 2016), cover price $59.95