The proposed catalog was printed with this goal so that persons zanimayushchіyasya the Russian istorіeyu could familiarize themselves, possibly in detail, with the soderzhanіem of each volume of printed Kommissіeyu of letters and acts. With each volume, the number of pages consisting in the same is indicated, which are numbered, so and unnumbered, which is especially important for checking the izdanіy that have been released from the sale, prіobrtayemykh by antique means. Most pechatanіya is indicated only for izdanіy printed not in Petrograd (St. Petersburg).