The work reveals for the first time the available information resources and traces main trends of studying the Russian Orthodox mission in America of the XVIII-XIX centuries. To study the problem it uses two databases of different levels: the international DB Web of Science by Clarivate Analytics, and the regional DB “Scientific Sibirika” generated by the State Public Scientific Technological Library of the Siberian Branch of the Russian Academy of Sciences. It's important because the analysis of regional information resources is rare presented in scientific literature, but they are quite significant to study regional issues. Applying scientometric techniques, it represent the analysis of the information arrays selected of databases with analytical tools. It gives characteristics of the temporal, type-specific, and language structure of documentary corpuses, reveals main research areas, names the most productive periodicals, scientific events dedicated to the Russian America Christianization. These information arrays are the information base to support further research by scientists and specialists on the above-mentioned problem, because the history of Russian Orthodox Mission in Alaska await development. These studies are possible through creating scientific team of Russian and American historians and clergy.