One Minute Manager is a 16-book series with 16 released primary works first released in 1950 with contributions by Kenneth H. Blanchard, Eunice Parisi-Carew, Donald Carew, Spencer Johnson, Constance Johnson, Patricia Zigarmi, Drea Zigarmi, Ken Blanchard; Patricia Zigarmi; Drea Zigarmi, William Oncken Jr., William Jr. Oncken, Hal Burrows, Lawrence Hawkins, and Susan Fowler.