Cheaper by the Dozen is a book by Frank Bunker Gilbreth, Jr. and Ernestine Gilbreth Carey that tells the story of motion study and efficiency experts Frank Bunker Gilbreth and Lillian Moller Gilbreth, and their twelve children. The title comes from one of Gilbreth's favorite jokes: it often happened that when he and his family were out driving and stopped at a red light, a pedestrian would ask "Hey, Mister! How come you got so many kids?" Gilbreth would pretend to ponder the question carefully, and then, just as the light turned green, would say "Well, they come cheaper by the dozen, you know," and drive off.

Other humorous incidents recounted in the book include a neighbor campaigning for birth control, who was flabbergasted when all twelve children lined up on signal, and a motion study of tonsillectomy which produced no results because the photographer forgot to remove the lens cap.

Cheaper by the Dozen was made into a 1950 motion picture starring Clifton Webb and Myrna Loy as Frank and Lillian Gilbreth. A remake Cheaper by the Dozen was produced in 2003, starring comedians Steve Martin and Bonnie Hunt.

A second book, Belles on Their Toes , published in 1952, outlines the family's adventures after Frank Sr.'s death in 1924.

External links

• Amazon entry for Cheaper by the Dozen
• IMDB entry for 1950 film version
• IMDB entry for 2003 film version