The table remained in the room for many years, and President William McKinley oversaw the signing of the peace treaty with Spain which concluded the Spanish–American War on it on August 12, 1898.
The walls recreated a mid-nineteenth century treatment of ornamental frames of decorative paper based on the wallpaper in the room Abraham Lincoln was taken to and died in, in a house opposite Ford's Theater.
Boudin's design survived into the administration of George H. W. Bush who had the room painted a light green and simple printed chintz curtains installed.
During the administration of Bill Clinton interior designer Kaki Hockersmith furnished the room in a mix of late American Empire and Victorian.
Walls were covered with a simulated leather of a deep claret red and a gilded chandelier with an American eagle, one of several purchased during Theodore Roosevelt's administration for the residence and West Wing, was hung.
The Treaty Room has also been home to The Peacemakers, a large oil painting depicting U.S. President Lincoln in the final months of the American Civil War.