https://docsouth.unc.edu/church/cromwell/cromwell.html
The First Negro Churches in the District of Columbia, John W. Cromwell, 64-106 p., Lancaster, Pa.; Washington, D. C.
The Association for the Study of Negro Life and History, Inc., 1917
From the Journal of Negro History 7, no.1 (January 1922), 64-106.
Call number E185 .J86 v. 7 1922 (Davis Library, University of North Carolina at Chapel Hill)

Many names associated with Montgomery County, Virginia: Anderson, Bell, Green, Hunter, Johnson, Muse, Saunders, Stewart, Taylor, Walker
Odd Fellows as well as the history of the establishment of churches in the District of Columbia.
