REMOVE

1. World Atlas
2. Scotland
3. Wales
4. 1850

WHAT

1. Atlas Map (3)
2. Composite Map (2)
3. Data Visualization (1)
4. Ethnography; Nationality; … (1)

WHERE

1. England (5)
2. Ireland (5)
3. British Isles (2)

WHO

1. Bar, J.C. (2)
2. Berghaus, H. (2)
3. Edler (2)
4. Johnston, Alexander Keith … (2)
5. Justus Perthes (2)

WHEN

1. 1851 (2)
2. 1849 (1)