Columbia subject headings:
Harvard subject headings:
Burd, Edward, 1751-1833--Correspondence.
Pennsylvania--History--1775-1865--Sources.
Philadelphia (Pa.)--History--Sources.
Soldiers--Pennsylvania--Correspondence.
United States--History--Revolution, 1775-1783--Sources.
Princeton subject headings:
Pennsylvania--History--1775-1865--Sources.
Philadelphia (Pa.)--History--Sources.