REMOVE

1. Separate Map
2. Nevada
3. Virginia City (Nev.)

WHAT

1. Mining (3)
2. Pictorial map (2)
3. Data Visualization (1)
4. Panorama Round (1)

WHERE

1. Washoe (2)
2. Comstock Lode (Nev.) (1)
3. Gold Hill (Nev.) (1)

WHO

1. Cooper, J.J. (2)
2. Edward Vischer (2)
3. Nagel, Fishbourne & Kuche … (2)
4. Vischer, Edward (2)
5. Payot, Upham & Co. (1)

WHEN

1. 1861 (2)
2. 1878 (1)