p. 30: at some distance from thence lies a great island called Sabya, of which the inhabitants are denominated Rogii: these inhabitants, as the Russians understood or thought they understood him, made crosses, had books and fire-arms, and navigated in baidars or leathern canoes.
p. 86, describing a Russian voyage in 1760 to islands of Umnak and Unalashka, where a sizable crew of Russians wintered and were murdered by the islanders, except for four who escaped: In the evening they returned to the haven, and found there an image of a saint and a prayer book; all the tackle and lading wwere taken away, excepting the sacks for provision.
[The only other reference to documents or books I have found here are to records of the voyages being described. E.g., see footnote on p. 314-15.]