Top Secret: Lubyanka to Stalin on the State of the Union (1922-1934). Thirteen books are available. In Russian (ask us if in doubt)/«Sovershenno sekretno»: Lubyanka “ Stalinu o polozhenii v strane (1922 “1934). V nalichii trinadtsat knig. In-N-t of Russian History of Russian Acad. sciences and others, Moscow Institute of Russian History RAS, 2001-2017, 13344s. SKUalbab42f22dc874a5f3.