In the mid-1800s, Samuel Morse helped create a code that was used in his new system of communication: telegraphs.
You may be familiar with the Morse code for “SOS”:
· · · ― ― ― · · ·
(or “dot dot dot, dash dash dash, dot dot dot”).
The three dots stand for “S” and the three dashes stand for “O.”
In Frank Gilbreth and Ernestine Gilbreth Carey’s memoir Cheaper by the Dozen,
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