Dupont Circle Citizens Association
Established in 1922 to promote and protect the interests of neighborhood residents through charitable, educational, and historic preservation activities.
http://www.dupont-circle.com/
Dupont Circle Historic District (DC SHPO)
D.C. Office of Planning document.
http://planning.dc.gov/planning/frames.asp?doc=/planning/LIB/planning/preservation/pdf/dupont.pdf
