Columbia subject headings:
Agriculturists--Correspondence.
Europe--Description and travel--Early works to 1800.
Sinclair, John, Sir, 1754-1835--Correspondence.
Harvard subject headings:
Agriculturists--Correspondence.
Europe--Description and travel.
Sinclair, John, Sir, 1754-1835--Correspondence.
Princeton subject headings:
Agriculturists--Correspondence.
Europe--Description and travel--Early works to 1800.
Europe--Description and travel.
Sinclair, John, Sir, 1754-1835--Correspondence.