Carl Linnaeus, The Lapland Journey, translated by Peter Graves (Edinburgh: Lockharton Press, 1995), p. 72.
Lycksele Lappmark, 02/06/1732, ¶317:
The women do the sewing. They make thread from sinews taken from the legs of reindeer and softened in their mouths before being twisted together. They also use the roots of spruce trees.