Star Wars Adventures In ABC was published in 1984 by Buena Vista Records and included a audio tape with a 4 page read along book. Another book and cassette tape set in this same series was Star Wars: Adventures in Colors and Shapes which featured C-3PO and R2-D2 try to help Han Solo and Chewbacca repair the Millennium Falcon. The ABC book featured a different item from the Star Wars universe to illustrate each letter of the alphabet — starting with "A is for AT-AT":
Found via retroactivist.com.