On This Day: September 3

September 3 moves through three very different kinds of departure: a man escaping slavery by train, a war becoming a nation on paper, and a spacecraft settling onto Mars. The episode follows the scenes behind those dates—and the consequences that lasted far beyond them.

On September 3, 1838, Frederick Augustus Washington Bailey boarded a northbound train in disguise and began the escape that would help make Frederick Douglass one of the most important voices in the fight against slavery. The National Park Service records how Anna Murray helped buy his ticket, how he dressed as a sailor, and how he reached New York City in less than twenty-four hours. 1

The escape was only the beginning. Douglass and Murray later settled in New Bedford, Massachusetts, and he took the name by which the world would know him. He became an abolitionist orator, author, newspaper publisher, and civil-rights leader. His first autobiography appeared in 1845. 1

On September 3, 1783, John Adams, Benjamin Franklin, and John Jay met British negotiator David Hartley at the Hôtel de York in Paris. They signed at eight in the morning, formally ending eight years of war and recognizing the complete independence of the United States. 2

The scene was quiet, and Adams thought the moment felt almost anticlimactic. But the document carried practical consequences: American access to the Mississippi, new boundaries, the status of British military posts, prewar debts, and property claims involving Loyalists. The Massachusetts Historical Society notes that carrying out those terms remained contested until the Jay Treaty of 1794. 2

On September 3, 1976, a machine crossed a much wider distance and stopped on another world. Viking 2 landed at Utopia Planitia on Mars, following Viking 1, which had arrived there in July. NASA describes the paired mission as an effort to photograph Mars, study its surface and atmosphere, and search for life. 3

Viking 2's first picture included a piece of the lander itself: part of its footpad, sitting on the Martian ground. Its laboratory then ran three biology experiments. The results showed unexpected chemical activity, but no clear evidence of living microorganisms. The lander continued returning data until April 11, 1980, while the Viking program as a whole sent back tens of thousands of images and transformed what scientists knew about Mars. 34