1920

Prohibition of alcohol begins in U.S.

Alexander P. Armour joins the firm at the age of 14 as a "Board boy"

1921

Discovery of Vitamin D and its prevention of Rickets

Coleman Wortham, Sr., becomes president, buys seat on the New York Stock Exchange

1924

Teapot Dome Scandal

Walt Disney creates "Alice in Wonderland," his first cartoon

Firm sells insurance business to Marsh & McLennan

1929

U.S. Stock Market crashes

Martin Luther King was born