A rare letter from George Washington expressing his faith in the American Revolution—even after a major strategic setback in 1777—went up for sale this Presidents’ Day. It’s estimated to fetch some $150,

On April 26, 1777, during the Revolutionary War, a large British raiding party attacked the American supply depot at Danbury, Connecticut, burning houses and barns and destroying stores of shoes, tents, medicine and food.

Washington signed the letter on May 7, 1777. It was written in response to a letter, five days earlier, from Brigadier General Samuel Holden Parsons notifying Washington of “an Event very Alarming to the Country” — a British victory in Danbury, Connecticut.

A letter written by George Washington in 1777 that is valued at $150,000 is up for sale this Presidents Day. The letter, acquired by the Raab Collection, was written during the Revolutionary War, when the British took the war to Danbury,