• The 16th Amendment to the United States Constitution is ratified, authorizing the Federal government to collect income tax.
• The first ever crossword puzzle appears in the New York World.

These people were born in 1913:

• American labor leader Jimmy Hoffa.

These people died in 1913:

• American abolitionist and Underground Railroad conductor Harriet Tubman.

1912 - 1913 - 1914

20th century

This is a collaboratively edited writeup. You are encouraged to assimilate and supersede it.