Robert Bruce Stewart said this quote

I was greeted by the Ulmers’ eleven-year-old daughter, a girl of remarkable poise. Mrs. Ulmer was busily typing a manuscript that needed to make the evening mail and after welcoming me, in a very friendly manner, she returned to work. There were two other children and Mr. Ulmer, who was writing the manuscript just as his wife was typing it. The youngest child, who could have been no more than five or six, had the task of relaying the handwritten pages from his father to his eldest sister, who would quickly scan them for errors, and from her to his mother. The middle child, a little girl of seven or eight, lay on the floor with a large dictionary and would look up words when called upon by her parents or sister.

~ Robert Bruce Stewart