Ridout, Cefn, author.

Freels, Korynn, author. Firpi, Jessica, editor. Ripley Publishing, publisher.

Warner, Gertrude Chandler, 1890-1979, author. Brizzi, Liz, illustrator. Adapted from (work): Warner, Gertrude Chandler, 1890-1979. Mystery at the ballpark. Albert Whitman & Company, publisher.