The Wadsworth-Sulgrave Historic Preservation Foundation is a nonprofit organization dedicated to discovering and memorializing the history and architecture of the District of Columbia, with a particular focus on Wadsworth House, the Sulgrave Club, and the Dupont Circle area. With an operating budget of $430.8K and total revenue of $2.2M for the filing year 2025, the organization is supported by a diverse array of funders, none of which provide 50% or more of its revenue. The foundation plays a vital role in preserving the historical significance of its locality, although it currently does not have a publicly available website.