Cheaper by the Dozen is the unforgettable story of the Gilbreth clan as told by two of its members. In this endearing, amusing memoir, siblings Frank Jr. and Ernestine capture the hilarity and heart of growing up in an oversized family. Mother and Dad are world-renowned efficiency experts, helping factories fine-tune their assembly lines for maximum output at minimum cost. At home, the Gilbreths themselves have cranked out twelve kids, and Dad is out to prove that efficiency principles can apply to family as well as the workplace.