REMOVE

1. Ivory Coast
2. Cameroon
3. Ghana
4. 1906

WHAT

1. Book Map (1)
2. Guide Book (1)
3. Roads (1)

WHERE

1. Chester (1)
2. Delaware (1)
3. Pennsylvania (1)
4. Robertson (1)

WHO

1. C. Colles (1)
2. Colles, Christopher (1)
3. Tiebout, C. (1)

WHEN

1. 1789 (1)