REMOVE

1. Philadelphia (Pa.)
2. Mitchell, Samuel Augustus
3. S.A. Mitchell, Jr.

WHAT

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

WHERE

1. Pennsylvania (2)

WHO

1. Campbell, R.A. (1)
2. Mitchell, Samuel Augustus … (1)
3. R.A. Campbell (1)

WHEN

1. 1860 (1)
2. 1870 (1)