Marcus has been a critic for several publications including Horn Book and the New York Times Book review .
Leonard S. Marcus ( born December 11 , 1950 ) is an author and expert on English language children 's literature .
author has been a author for several publications including Horn Book and the New York Times Book review .
Leonard S. Marcus ( born December 11 , 1950 ) is an author and expert on English language children 's literature .