I Spy Letters Author:Jean Marzollo These charming picture books introduce I SPY to our youngest readers I SPY Letters is based on the bestselling I SPY Little Letters. Babies, toddlers, and preschoolers can search photos from the original I Spy series for letters to help them learn the alphabet. Simple picture clues and rhyming riddles guide the youngest readers through 14... more » interactive, fun-filled spreads.« less