Frank Gilbreth Jr.
Frank Bunker Gilbreth, Jr. (March 17, 1911 – February 18, 2001) was co-author, with his sister Ernestine, of Cheaper by the Dozen and Belles on Their Toes. Under his own name, he wrote Time Out for Happiness and Ancestors of the Dozen.
He was born in Plainfield, New Jersey, the 5th child (and first boy) of the 12 children born to efficiency experts Frank Gilbreth, Sr. and Lillian Moller Gilbreth, and grew up in the family home in Montclair, New Jersey.
During World War II, he served as a naval officer in the South Pacific. In 1947, he returned to The Post and Courier as an editorial writer and columnist. In his later years, he relocated to Charleston, South Carolina, where he went on to be a journalist, author and newspaper executive. Under nom de plume Ashley Cooper, he wrote a long-running column, "Doing the Charleston," for the Charleston paper The Post and Courier; it ran until 1993.
“One of the girls devised a method of stamping envelopes which enabled her to work at a speed of between one hundred and one hundred and twenty envelopes per minute …. We do not know just what processes were followed in developing the method, as the girl studied it out and put it in operation while the writer was taking a vacation.”