Today is the 4th of July 2015, the 239th anniversary of the dating of the Declaration of Independence (though most of the signatures were actually appended in August of 1776). The day has been marked by celebrations almost from the beginning; for example, Thomas Jefferson hosted parties on the day while serving as Minister to France.
In 1826, on the fiftieth anniversary of American Independence (and within hours of each other), 2nd President John Adams and 3rd President Thomas Jefferson died (at the ages of 90 and 83, respectively). In 1776, they had served on the Continental Congress committee charged with writing the Declaration of Independence. In 1796, they were opponents in the first contested Presidential election (Adams won, making Jefferson Vice President). Their relationship became increasingly strained as their views of what the government should become were at odds with each other. After Jefferson retired from the Presidency, however, they rekindled their friendship through a series of letters that persisted through the last decade and a half of their lives.
In 1831, five years to the day after the deaths of Adams and Jefferson, fifth President James Monroe died at the age of 73. Monroe was the fourth President to die (James Madison outlived him by five years), so for a time, three-quarters of all Presidents died on Independence Day. Monroe was the last President to die on Independence Day.
However, in 1891, former Vice President Hannibal Hamlin died on the 4th. The 81-year-old had been Abraham Lincoln's first Vice President (he was dropped from the ticket in 1864 to make room for southerner Andrew Johnson). Previously, Hamlin served four years in the House of Representatives, two months as Governor of Maine, and twelve years (in two separate terms) in the Senate. After his Vice Presidency, he served another 12 years in the Senate, and then capped his government career by serving as the US Minster to Spain for almost two years.
The fourth is not all about deaths, however. On this date in 1872, John Calvin Coolidge, Jr. (who would later drop his first name) was born in Plymouth Notch, Vermont. In the early morning hours of August 2, 1923, following the death of Warren Harding, Coolidge's father swore him into office as the 30th President of the United States (the only one to be born on Independence Day).