Since 1888, he served in the Imperial Public Library as an assistant librarian of the Russian language book department, with work in which all of Saitov's further activities were connected (with a break from 1893 to 1899).

Under the modest name of "notes", this publication contains detailed biographies of Saitov's pen of almost all the most important figures of Russian literature of the early 19th century.

According to a general review by critics of the late 19th century, these "notes" by Saitov constitute the decoration of the publication, which thanks to them is a handbook for the historian of Russian literature.

Saitov also found information about the remarkable pre-revolutionary burials at the Bogoslovskoe Cemetery, and included 39 personalities in the Saint Petersburg Necropolis compiled by him.

[3] In 2017, the Saitov's family burial was restored by the Sobor Limited Liability Company, and in December of the same year, a funeral service was served at their graves by Archpriests Igor Yesipov and John of Moscow.