I recently asked a friend of mine (who works with children who have autism)what books she would recommend for parents of children with autism. Here's her list:
Let Me Hear Your Voice by Catherine Maurice
Autism Treatment Guide by Elizabeth K. Gerlach
Children with Autism: A Parent's Guide by Michael Powers
Teaching Developmentally Disabled Children: The Me Book by O.Ivar Lovaas
The only one I've read is Catherine Maurice's book, but I also plan to soon read Emergence by Temple Grandin.
What are your autism book recommendations?