Carl Linnaeus, The Lapland Journey, translated by Peter Graves (Edinburgh: Lockharton Press, 1995), p. 103.

The Prefecture of LuleĆ„ [1], 25/06/1732, ¶499:

The salmon is said to spend the winter in the Western Sea and then to ascend gradually up-river each spring to spawn. It starts at the river mouth no earlier than the middle of May and is here by Midsummer etc. I was shown hooks that had been found in them that resemble those in use over in the west.