Ernestine Moller Gilbreth Carey was an American writer.
Ernestine Gilbreth Carey
Frank Bunker Gilbreth was an American engineer, consultant, and author known as an early advocate of scientific management and a pioneer of time and motion study, and is perhaps best known as the father and central figure of Cheaper by the Dozen.
Frank Bunker Gilbreth
Gilbreth in about 1916