Story of two sisters. One character, their brother, is autistic. Martian Timeslip . Science Fiction book that includes a young autistic character. A reader says Dick gained his knowledge when he babysat a ten year old with autism.
Reader describes one character as autistic.
I think the character persists in the series and in a followup series The Malloreon . Faulkner's first major novel. One character, Benji, appears to be autistic. Main character is an adolescent boy with an autistic brother. The Next Generation .