An adapted alternating treatments design, replicated across two books, was used to examine the effects of Dialogic Reading delivered using traditional paperback books and technology-enhanced books utilizing a Surface tablet on the vocabulary acquisition of four preschoolers with autism spectrum disorder. For each book, 30 words were randomly assigned to conditions (i.e., 10 to traditional Dialogic Reading, 10 to Dialogic Reading with technology, 10 to control). Intervention was delivered 1 to 4 times per week across 6 months. Results suggest both methods increased vocabulary compared with baseline. Dialogic Reading delivered via both paperback and technology-enhanced books is promising for increasing vocabulary for preschoolers with autism spectrum disorder.