99 books in series

The Boxcar Children

The Boxcar Children is a 93-book series with 99 primary works first released in 1924 with contributions by Gertrude Chandler Warner, Shannon Eric Denton, Charles Tang Gertrude Chandler Warner, Charles Tang, Denise Shanahan, Hodges Soileau, Robert Papp, Tim Jessell, and Anthony VanArsdale.