why is where's waldo a banned book

Where's Waldo (also known as Where's Wally) was banned or challenged in some libraries and schools primarily because certain early editions contained small hidden images that some viewed as inappropriate. The main controversy involves a 1987 beach scene illustration where a woman is depicted sunbathing topless (with a tiny visible breast about 1/16” in size), and there are also images of two men in a seemingly compromising position, which some people criticized for containing nudity and adult-themed hidden content. These concerns led to removals of the book from some school libraries in the late 1980s and early 1990s. Later editions censored or altered these images by adding bathing suits or covering the nudity. The bans and challenges highlight how people have scrutinized the intricate, detailed illustrations in the books in search of any content they might consider inappropriate, leading to the book being listed among frequently challenged or banned books in that period. Despite this, the book itself is generally innocent in nature and is famous for its visual search puzzles rather than any adult content. The controversy seems to have been stirred largely by people discovering these tiny hidden images and raising objections to them.