REMOVE

1. Delaware Bay
2. Maryland
3. Washington (D.C.)
4. 1840

WHAT

1. Atlas Map (1)
2. World Atlas (1)

WHERE

1. Canada (1)
2. Ontario (1)
3. U.S. North East (1)

WHO

1. Arrowsmith, John (1)
2. John Arrowsmith (1)

WHEN

1. 1837 (1)
2. 1838 (1)