REMOVE

1. Separate Map
2. Merrill, Col. W.E.
3. Dodge, J.T.

WHAT

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

WHERE

1. North Central United Stat … (1)
2. United States (1)

WHO

1. Berghaus (1)
2. Eberhardt, H. (1)
3. Habenicht, H. (1)
4. Justus Perthus (1)
5. Kuhn, E. (1)

WHEN

1. 1879 (1)
2. 1881 (1)