About the book: 1923 / Collection of memoirs and other documentary materials, dedicated to the twenty-fifth anniversary of the first congress of the RSDLP. Contains varied and little-known information to the modern reader about the situation of workers and the development of the Social Democratic movement at the end of the 19th century. The page numbering of the printed original is retained. The page number in square brackets is placed at the end of the page. Photographs are not included in the page numbering order, just like in the printed original. The location of the portrait photographs has been changed. They are placed either in the memories of a given person or in the place where he is mentioned. In the printed original, photos are inserted on separate pages (4 pieces per page). The numbering of footnotes has been replaced from page by page to continuous. The format of the footnotes has also been changed. In the printed original they were designated as follows: 1). In an e-book, the footnote number is placed in square brackets. The original spelling is preserved. Discharge is replaced by bold highlighting. In some cases (usually when writing individual words), the discharge is preserved. The style of quotation marks has been changed. The text contains numerous deviations from spelling rules, which can be defined as errors. In some cases, their preservation is specified in the comments. CSS was used to design the tables. Cr3 is recommended for reading. Tables are presented in two forms: as a table and as a picture for programs that do not support CSS. In some cases, for ease of reading tables, landscape orientation of the book is recommended. —V_E.