"A Relation of two Russe Cossacks travailes, out of Siberia to Catay, and other Countries adjoyning thereunto. Also a Copie of the last Patent from the Muscovite. A Copie of a Letter written to the Emperor from his Governors out of Siberia". Published as Chapter XI in: Samuel Purchas, Haklutyus Posthumus (or, Purchas His Pilgrimes), vol. XIV, p. 280. 1625. Full Text on archive.org. The city name reported by Petlin appears in Purchas' English translation as "Shirokalga".