(JTA) — Art Spiegelman’s “Maus,” along with six books about the Holocaust geared toward young readers, are among the hundreds of books that a handful of school districts in Missouri have reportedly removed from their shelves since the start of this school year.

The list of books pulled from shelves was published Wednesday by the literary free-expression advocacy group PEN America, along with a letter of protest signed by Spiegelman and other authors.

“This is what happens when we are operating in a climate of fear,” Jonathan Friedman, PEN America’s director of free expression...