The Nehemiah Royce House, also known as the Washington Elm House, is a historic home located at 538 North Main Street in Wallingford, Connecticut. The saltbox house was constructed in 1672. George Washington visited the house twice, first in 1775 while on his way to take command of the Continental Army in Cambridge, Massachusetts, and again in 1789 when he gave an address to the townspeople in front of the house near the Elm.