Calvin Coolidge was president of the United States from 1923 to 1929. Coolidge was known for his quiet demeanor, which earned him the nickname "Silent Cal."
Militant suffragette Emily Wilding Davison fought to gain equal voting rights for British women before dying at the Epsom Derby in 1913.
Art critic Sergei Diaghilev started the artistic collaboration the Ballet Russes, which toured worldwide and was a forerunner of the Royal Ballet.
African-American author Paul Laurence Dunbar is best known for his verse and short stories, many of which are written in black dialect.
Alexandra Feodorovna was consort of the Russian Czar Nicholas II. Her rule precipitated the collapse of Russia's imperial government. She was murdered, along with her entire family, in 1918.
Andrew Kehoe was a mass murderer who went on a 1927 killing spree that included dynamiting the Bath, Michigan Consolidated School, killing 37 children.
Thomas Pendergast was a political boss of Kansas City in the early 20th century.
William Monroe Trotter was a Harvard-educated journalist and activist who championed equal rights for African Americans.
Edith Wilson was Woodrow Wilson's second First Lady. When Woodrow suffered a stroke, Edith kept it a secret so he wouldn't lose his position.