I would encourage you to ask the question over at the Special Needs sub-forum of the Well-Trained Mind BBS. http://forums.welltrainedmind.com/forum/6-the-l... My child with ASD isn't being homeschooled at the moment so I don't have any specific recommendations.

We have been using Intellego Unit Studies for Geography, History, Government, and Science. The company has some bundled products on Currclick.com or you can find out about the entire program on their website, IntellegoUnitStudies.com. Homeschool Buyers Co-Op has a really good deal right now at https://www.homeschoolbuyersco-op.org/intellego...
The whole program is designed by a mom of a special needs child but I'm not sure what his diagnosis is. I do know our son loves the studies we have done to this point. We have done both geography and science in the past and are adding history this year. If I can help you out any, you are welcome to email me. My address is [[email: [[email: [[email: (Email address can only be seen by the question and answer creators)
Edwina

Thanks MyZett.

Thanks for the link Crimsonwife to welltrainedmind.