Columbia subject headings:
Law firms--Pennsylvania--Philadelphia--History.
Lawyers--Pennsylvania--Philadelphia--History.
Morgan, Lewis & Bockius--History.
Harvard subject headings:
Law firms--Pennsylvania--Philadelphia--History.
Lawyers--Pennsylvania--Philadelphia--Biography.
Morgan, Lewis & Bockius--History.
Princeton subject headings:
Law firms--Pennsylvania--Philadelphia--History.
Lawyers--Pennsylvania--Philadelphia--Biography.
Morgan, Lewis & Bockius--History.