Summerseat. Washington's headquarters Dec. 8-14, 1776. Built in 1773 by Thomas Barkley; restored in 1931. Owners included Robert Morris and George Clymer. Located at Legion and Clymer Aves. At site, Legion Ave., near Hillcrest Ave., Morrisville, PA by Pennsylvania Historical and Museum Commission Colour: blue Wikimedia: Flickr: [geolocate this address] Google Streetview OpenStreetMap