Sounds good. (If it helps, NZ had a significant whaling industry!)
Here's a list of English corrections.
N. America:
San Fransiko to San Fransisco (1901, 1941, 1961)
Housten to Houston (1901, 1941, 1961)
S. America :
Beunos Airos to Beunos Aires (1901)
Fartaleza to Fortaleza (1901, 1941, 1961)
Rio De Janeiro to Rio
de Janeiro (1901)
French Gueneya to French Guinea (Guiana) (1901)
Map suggestions only, feel free to ignore:
Minoan to Santa Cruz (1901)
Kassite to Santiago (1901)
Hun to French Guinea (Guiana) (1941, 1961)
Africa :
Zair to Zaire (1901, 1941, 1961)
Madagaskar to Madagascar (1901, 1941, 1961)
Efiopia to Ethiopia (1901)
Map suggestions only, feel free to ignore:
Libyan to Mozambique (1901)
Zambia to Tanzania OR Kenya. (1901, 1941, 1961)
'South Africa' 1941, 1961 - Durban should be where 'East London' sits.
Europe:
Edinburg to Edinburgh (1901, 1941, 1961)
Athenas to Athens (1901)
Istambul to Istanbul (1901, 1941, 1961)
Afganistan to Afghanistan (1901)
Map suggestion :
Goteburg to Denmark OR Copenhagen (1901 only)
Asia:
Bejing to Beijing (1901, 1941, 1961)
Map suggestion :
Japan 1901, 1941, 1961. 'Nagasaki' should be where 'Yokogama' sits on your maps. 'Sopporo' should replace the old Nagasaki in the North.
1901 - on mouse roll overs the Swedish Empire is referred to as the 'Swidish Empire'. This is funny, but inaccurate.
1961 - M. Tatcher (Gt. Britain) should be M. Thatcher.
Best of luck with the mod.