REMOVE

1. Pennsylvania
2. Mitchell, Samuel Augustus
3. S.A. Mitchell

WHAT

1. Atlas Map (7)
2. World Atlas (6)
3. National Atlas (1)

WHERE

1. Philadelphia (Pa.) (3)
2. New Jersey (2)
3. Delaware (1)
4. Harrisburg (Pa.) (1)

WHO

1. Burroughs, H.N. (3)
2. Barralet. (2)
3. Gamble, W. H. (2)

WHEN

1. 1846 (2)
2. 1849 (2)
3. 1880 (2)
4. 1831 (1)