While processing artifacts recovered from the North Grove excavation (in preparation for the Mansion Revitalization Project), archaeological lab analysts made an interesting discovery: a piece of 18th-century window glass etched with a cursive "N," excavated about 15 feet northwest of the New Room's Venetian window.
Notably, other signatures etched in glass survive in the Mansion in the Lafayette Room and in the Yellow Room, where Martha Washington’s 15-year-old granddaughter, Elizabeth (Eliza) Parke Custis Law, etched her name and the date, “August 2, 1792,” into a window pane.
