Columbia subject headings:
Europe--Description and travel.
Maclure, William, 1763-1840--Diaries.
Maclure, William, 1763-1840--Travel--Europe.
Harvard subject headings:
Europe--Description and travel
Maclure, William, 1763-1840--Diaries.
Maclure, William, 1763-1840--Travel--Europe.
Princeton subject headings:
Europe--Description and travel.
Geologists--United States--Biography.
Geologists--United States--Diaries.
Maclure, William, 1763-1840--Diaries.
Maclure, William, 1763-1840--Travel--Europe.