REMOVE

1. Energy
2. Mining and Minerals
3. Atlas Map
4. 1952

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)