Beginner Books is a 31-book series with 31 released primary works first released in 1913 with contributions by Dr. Seuss, P.D. Eastman, Fritz Siebel, Mike McClintock, Edna Walker Chandler, Robert Lopshire, Benjamin Elkin, Theo LeSieg, Roy McKie, Helen Marion Palmer, Richard Scarry, Stan Berenstain, Jan Berenstain, Joan Heilbroner, Al Perkins, Marilyn Sadler, Joe Harris, Fred Phleger, and Alice Low.