Speaking of Speech Materials Exchange:
http://www.speakingofspeech.com/Social_Skills_Pragmatics.html
Teachers Pay Teachers:
https://www.teacherspayteachers.com/Browse/Search:social%20stories
Little Tor Elementary School Site:
http://www.ccsd.edu/LittleTor.cfm?subpage=5804
Amazon.com:
http://www.amazon.com/s/ref=nb_sb_noss_2?url=search-alias%3Daps&field-keywords=social+stories