Fort McHarry is mentioned only in Fallout 3.
Behind the scenes
In reality, "Fort McHarry" is actually Fort McHenry, a bastion fort in present-day Baltimore, Maryland. The Second Continental Congress (not the "Judgemental Congress") primarily met at Independence Hall in Philadelphia, Pennsylvania; not "Fort McHarry" or even the real-world Fort McHenry. Fort McHenry is actually best known in American history for its role in the War of 1812, as a battle there was the source of inspiration for "The Star-Spangled Banner," the national anthem of the United States.
- The Lone Wanderer: "What's the history behind the document?"
Abraham Washington: "On July the 4th in 1776, a group calling themselves the Second Judgmental Congress got together at Fort McHarry in Maryland. After a ceremony which ended with Paul Revere singing the famous battle hymn known as the National Anthem, the document was signed. From there, it was sent to England by plane presumably and presented to King George himself. Thus began the Evolutionary War."
(Abraham Washington's dialogue)