Willy is a fast swimming sperm and this story takes on a rather odd whimsical approach to the baby-making process, though it does provide some insight for youngsters on where babies come from.

Based on the true story of two male penguins at the zoo who hatch and raise an orphaned chick, this book might take anthropomorphizing a bit far at times. But this book has folks up in arms for the implications it might have in the human world. Ages 6 and up.

Yes, this good old classic has a controversy surrounding it: the picture of the author on the back originally had a cigarette in his hand, the publisher digitally erased it from later publications and hubbub ensued in the book community!

I'm unaware whether the reissue has the challenged pick, but apparently when most folks were looking for Waldo, someone found a lady with her bikini top off . . . furor naturally followed.

Plenty of Halloween stuff gets challenged on the basis that it includes the occult and/or frightening images for children, this is one of the top challenged picture books on the subject.

I think this is the version that was challenged on the basis of Red Riding Hood having wine in that basket she was taking to grandma . . .

Another book that's got mixed opinions. The idea of "nappy hair" seems to raise red flags, though the book is a positive image builder for gals that have this sort of hair.

Kellog's "bad dog" story may be funny, but many feel the burgaler holding a gun to the mother's head not once, but twice in pictures is just unacceptably scary for a picture book for young children.

This grandmaster of children's poetry is often challenged for his outrageous and often shocking poems. "Someone Ate the Baby" being an example.

This story of five brothers with special talents who manage to thwart execution is one I loved as a child. It's a folk tale with many versions, but this version has raised eyebrows because of its violent content, and for the non-PC character depictions.

Here's a historical one, this one was put on the reserve shelf in Alabama in 1959 because it depicted a black rabbit marrying a white rabbit. Thus, I suppose, interracial marriage. Wonder what they made of the Owl and the Pussycat . . .