19th All-Russian scientific conference “Penmen books and other mass sources of the 16th-21st centuries”, timed to the centenary of Alexander Ilich Kopanev was conducted from July 1 till July 4. Opening, plenary session and sessions of sections on July, 1 took place at Saint Petersburg Institute of History of the RAS, while on July, 2-3 the conference’s sessions and round table were conducted at the Centre of history studies of Saint-Petersburg campus of the National Research University “Higher School of Economics”. More than 50 scholars from Moscow, St Petersburg, Novgorod, Pskov and other cities participated in this conference and delivered their reports.