Maps of the lower Don and Azov region produced by James Bruce and Cornelis Cruys in connection with Peter I’s 1696 Azov campaign appear to mark the point at which cartographic work undertaken on Russian territory by specialists in Russian service began moving beyond the traditional chertezh mapping model and embraced the principles of the new Western European geodesic cartography. This was becoming possible through greater familiarization with Copernican cosmography and higher mathematics, the importation of new instruments of observation, and the establishment of new centers of calculation on Russian soil. The adoption of the new geodesic cartography served the Petrine imperial project—not only in supporting communications and logistics on the empire’s frontiers, but in winning European acknowledgment of Russian Imperial sovereignty. The process of adoption also illustrates the manner in which a network of collaborating scholars in Russia and abroad was quickly assembled.