Columbia subject headings:
Dead Sea (Israel and Jordan)
Jordan River.
Palestine--Description and travel.
United States--Discovery and exploration.
Harvard subject headings:
America--Discovery and exploration.
Dead Sea (Israel and Jordan)
Discoveries in geography--American.
Jordan River.
Palestine--Description and travel
Princeton subject headings:
Dead Sea (Israel and Jordan)
Jordan, River.
Palestine--Description and travel.
United States--Exploring expeditions.