Belles on their Toes

237 pp. "Belles on Their Toes is a 1950 autobiographical book written by the siblings Frank Bunker Gilbreth, Jr. and Ernestine Gilbreth Carey. It is the follow-up to their book Cheaper by the Dozen (1948), which covered the period before Frank Gilbreth, Sr. died. It was adapted as a film in 1952. Belles on Their Toes  was written about the Gilbreth family after Frank Bunker Gilbreth, Sr.'s death, and how they survived as their mother, Lillian Moller Gilbreth, continued the pioneering work in industrial engineering, time and motion studies, and industrial/organizational psychology she had shared with her husband. This book is also the first place where the absence of the second oldest child, Mary Gilbreth, is explained; she died of diphtheria in 1912, at age five." With illustrations by Donald McKay.