Columbia subject headings:
Cartography--India--History--18th century.
Cartography--India--History--19th century.
India--Historical geography.
India--Surveys--History--18th century.
India--Surveys--History--19th century.
Topographical surveying--India--History--18th century.
Topographical surveying--India--History--19th century.
Harvard subject headings:
Great Britain--Colonies--Asia--Administration--History.
Great Britain--Colonies--Asia--Maps--History.
India--History--British occupation, 1765-1947
India--Maps--History.
Princeton subject headings:
Great Britain--Colonies--Asia--Administration--History.
Great Britain--Colonies--Asia--Maps--History.
India--History--British occupation, 1765-1947.
India--Maps--History.