Hopefully this will be an evolving list.

The Secret City: A History of Race Relations in the Nation’s Capital
by Constance Green

The Hidden History of Washington, DC
by Tingba Apidta

Between Justice and Beauty: Race, Planning, and the Failure of Urban Policy in Washington, D.C.
by Howard F., Jr. Gillette

Urban Odyssey: A Multicultural History of Washington, D.C.
by Francine Curro Cary

The Beat: Go-Go’s Fusion of Funk and Hip-Hop
by Kip Lornell and Charles C. Stephenson Jr.

Dance of Days: Two Decades of Punk in the Nation’s Capital
by Mark Andersen and Mark Jenkins.

The Secret Architecture of Our Nation’s Capital: The Masons and the Building of Washington, D.C.
by David Ovason

The Great Society Subway: A History of the Washington Metro
by Zachary M. Schrag

Books about DC I have read:

Dream City: Race, Power, and the Decline of Washington, D.C.
by Harry S. Jaffe, Tom Sherwood

The Failures Of Integration: How Race and Class Are Undermining the American Dream
by Sheryll Cashin