REMOVE

1. Mining
2. Sutro Tunnel
3. Storey
4. 1873

WHAT

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

WHERE

1. Germany (1)
2. Kaliningrad (1)
3. Poland (1)

WHO

1. Dussieux, L. (1)
2. Jacques Lecoffre et Comp. (1)
3. Marlier (1)
4. Racon, Simon et Comp. (1)

WHEN

1. 1854 (1)
2. 1856 (1)