Independence day has been unusually dangerous for U.S. presidents.
Three have died on July 4, and one contracted a fatal illness on that day.
Former presidents John Adams and Thomas Jefferson died within minutes of each other on July 4, 1826, exactly 50 years after the Declaration of Independence was signed.
Former president James Monroe died exactly five years later.
In 1850, President Zachary Taylor celebrated a hot July 4th with speeches and too many picnic foods.
He took to his bed that night with acute indigestion and died five days later, largely thanks to the medical “treatment” he received, bleeding with leeches and dosing with mercury compounds, passing the presidency on to Millard Fillmore.
On the other hand, July 4th hasn’t been completely unlucky for presidents, since Calvin Coolidge was born on that day in 1872.