Here's a Flickr set detailing the differences between "Richard Scarry's Best Word Book Ever," 1963 edition, and "Richard Scarry's Best Word Book Ever," 1991 edition. (Via Drawn!) It's not just political correctness either (e.g., lightening the fur on the animal driving in a car stopped by a police officer, making the police officer female). It's also a softening of the tone. "He comes promptly when he is called to breakfast," becomes "He goes to the kitchen to eat his breakfast." Think about what a change like that meant to the editors. Telling children what to do and expecting them not to balk? How retrograde!
The set makes nice use of the "add a note" function in Flickr. The comments are good too. The photographer is Kokogiak.