REMOVE

1. Guide Book
2. Nautical charts
3. Susquehannah River (Md.)
4. Virginia

WHAT

1. Atlas Map (1)
2. Geologic Atlas (1)
3. Geology (1)
4. Physical (1)

WHERE

1. Alaska (1)
2. Greenland (1)
3. Switzerland (1)
4. Washington (1)
5. World (1)

WHO

1. Berghaus, Hermann (1)
2. Hess, O. (1)
3. Justus Perthes (1)
4. Kogel, F. (1)
5. Risch, M. (1)

WHEN

1. 1892 (1)