Sakhalin Island has interesting links to the History of the Tartary Empire.
What and where is this island?
From this came a little “coincidence” or several.
The Dutch East India Company.
The Jesuits.
A 17th century Dutch cartographer called Maarten Gerritszoon Vries.
And a nice little resource of volumes about the “discoveries” of these islands.
Official diaries kept by the chief factors of the Dutch East India
Just saying :o)