REMOVE

1. Discoveries in geography
2. Bay of Bengal
3. South China Sea
4. Mongolia
5. Erhard Bros. (Firm), engrave …

WHAT

1. Bonvalot, Gabriel, 1853-1 … (1)
2. Printed (1)
3. Thematic Maps (1)

WHERE

1. China (1)
2. Hainan Sheng (China) (1)
3. India (1)
4. Korea (1)

More 

WHO

1. Erhard Bros. (Firm), engr … (1)

WHEN

1. [ca. 1892] (1)