The article analyzes the latest historiography devoted to the initial stage of Peter I's church reform. The authors showed that I. N. Shamina's monograph is a well-founded study on the Kolomna diocese, based on the analysis of a set of documents from F. 237 (Monastic Office) in the RGADA. The issue of completing the description of episcopal houses and monasteries is debatable. Thus, the inventory of the Solovetsky monastery was revealed, which dates back to 1705, and not 1701–1703. In general, the monograph of I. N. Shamina contains a valuable analysis of the identified sources and tells about the changes that took place in the life of the dioceses at the beginning of the 18^th century.