The true and unforgettable story of the Gilbreth clan as told by two of its members. In this endearing and 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 twelve kids and Dad can prove demonstrably - well, almost! - that efficiency principles can apply to family life as well as the workplace. Made into a film (1950) with Clifton Webb and Myrna Loy as Dad and Mum Gilbreth and remade in 2003. (See the original, it's funnier!)

https://cosmiccauldronbooks.com.au/products/belles-on-their-toes-frank-gilbreth-jr-and-ernestine-gilbreth-carey