REMOVE

1. Pennsylvania
2. Burlington County (N.J.)

WHAT

1. Atlas Map (1)
2. State Atlas (1)

WHERE

1. Camden County (N.J.) (1)
2. New Jersey (1)
3. Philadelphia Region (Pa.) (1)

WHO

1. Cook, George Hammell, 181 … (1)
2. Geological Survey of New … (1)
3. Julius Bien (1)
4. Vermeule, C. C. (Corneliu … (1)

WHEN

1. 1888 (1)