Sorry for the delay, my friend finally just wrote me back. These are some books she and her sister recommended. Hope this helps!
On Autism-
Reaching Out, Joining In, Teaching Social Skills to Young Children with Autism by Mary Jane Weiss
Visual Supports for People with Autism by M.J. Cohen and D.L. Sloan
Incorporation Social Goals in the Classroom by Rebecca A. Moyes
Also-
Teaching Reading to Children with Down Syndrome by Patricia Oelwein
Late, Lost and Unprepared A Parents Guide to Helping Children with Executive Functioning by Joyce Cooper-Kahn and Laurie Dietzel
Complete learning disabilities handbook by Joan M. Harwell
Improving Reading and Literacy in grades 1-5 by Edward St. John, Siri Ann Loescher, and Jeffrey Bardzell