REMOVE

1. Atlas Map
2. Ohio
3. Metzeroth, C.
4. Justus Perthes

WHAT

1. World Atlas (2)

WHERE

1. Pennsylvania (2)
2. U.S. North East (2)
3. Canada (1)
4. Indiana (1)

WHO

1. Eberhardt, H. (2)
2. Habenicht, H. (2)
3. Kuhn, E. (2)

WHEN

1. 1875 (2)