Geography
Nicaragua
75 results
Great Lakes (North America)
72 results
Panama Canal (Panama)
69 results
United States
56 results
Indiana
39 results
Florida
37 results
Michigan
36 results
Panama
31 results
Mississippi River
29 results
Maryland
25 results
Atlantic Ocean
24 results
Louisiana
19 results
Ohio
19 results
California
18 results
Illinois
18 results
Massachusetts
18 results
Alabama
17 results
New York (State)
16 results
Canal Zone
15 results
Pennsylvania
14 results
Cape Cod Canal (Mass.)
13 results
Ohio River
13 results
Texas
13 results
Chesapeake and Delaware Canal (Del. and Md.)
11 results
Delaware
11 results
Virginia
11 results
Wisconsin
11 results
Washington (State)
10 results
Mexico, Gulf of
9 results
Pacific Ocean
9 results
Georgia
8 results
Columbia River
7 results
Illinois and Michigan Canal (Ill.)
7 results
Kentucky
7 results
Louisville (Ky.)
7 results
New Jersey
7 results
Panama, Isthmus of (Panama)
7 results
Saint Marys River (Mich. and Ont.)
7 results
Tennessee River
7 results
Cumberland Road
6 results
Oregon
6 results
Puget Sound (Wash.)
6 results
Sault Sainte Marie Canal (Mich.)
6 results
Alaska
5 results
Charleston (S.C.)
5 results
Great Britain
5 results
Minnesota
5 results
New York (N.Y.)
5 results
Niagara Falls (N.Y.)
5 results
Panama Canal
5 results
more…