Thus was born the classic toddler tale of “Where’s Spot?” (Putnam, $12.99). This year, “Where’s Spot?” is celebrating its 30th birthday. Putnam has just published a special anniversary ...

The first book — Where's Spot? — was published in 1980 and employed what was, at the time, a relatively novel and innovative device for a kids' book: it called for pre-schoolers and parents to ...