Photocopies of notes on and transcripts of correspondence, writings and police records drawn from files on Aleksandr Shli͡apnikov
and Sergeǐ Medvedev in Russian archival repositories, 1917-1958, relating to the Workers Opposition movement in the Soviet
Union in the 1920s. Includes digital sound recording and transcript of interviews of I͡U. A. Shli͡apnikov, son of Aleksandr
Shli͡apnikov. Used as research material for the book by Barbara Allen,
Alexander Shllyapnikov, 1885-1937: Life of an Old Bolshevik (Leiden, 2015).