Japanese, and their language has many words similar to Japanese in it.

Perhaps, long years ago, some shipwrecked Japanese were cast upon the
coast of Alaska, and, finding their boats destroyed and the land good to
live in, settled there, and thus began the Thlinkit tribes.

The Chilcats, Haidahs, and Tsimsheans are all Thlinkits, and are by far
the best of the brown people of the Northland. They are honest, simple,
and kind, and more intelligent than the Indians living farther north, in
the colder regions. The Thlinkit coast is washed by the warm current from
the Japan Sea, and it is not much colder than Chicago or Boston, though
the winter is a little longer.

Kalitan fished diligently but caught little. He was warmly clad in
sealskin; around his neck was a white bearskin ruff, as warm as toast,
and very pretty, too, as soft and fluffy as a lady's boa. On his feet
were moccasins of walrus hide. He had been perhaps an hour watching the
hole in the ice, and knelt there so still that he looked almost as though
he were frozen. Indeed, that was what those thought who saw him there,
for suddenly a dog-sledge came round the corner of the hill and a loud
halloo greeted his ears.

"Boston men," he said to himself as he watched them, "lost the trail."

They had indeed lost the trail, and Ted Strong had begun to think they
would never find it again.

Chetwoof, their Indian guide, had not talked very much about it, but
lapsed into his favourite "No understan'," a remark he always made when
he did not want to answer what was said to him.