REMOVE

1. Pennsylvania
2. Knight, J.

WHAT

1. Atlas Map (5)
2. World Atlas (5)
3. Book Map (2)
4. Canals (2)
5. Guide Book (2)

WHERE

1. United States (3)
2. Philadelphia (Pa.) (2)
3. Florida (1)
4. New Jersey (1)

WHO

1. Mitchell, Samuel Augustus (3)
2. Barralet. (2)
3. Brose, W. (2)
4. Burroughs, H.N. (2)

WHEN

1. 1840 (2)
2. 1848 (2)
3. 1849 (2)
4. 1857 (1)