Typescript memoirs, in two volumes, of Tkachenko. The memoirs are written under the pseudonym St. Chemer, and are entitled: "Dvadt︠s︡at ́pi︠a︡t ́let pod serpom i molotom" (429 p.), and "Dva lata pod znakom svastiki" (76 p.). There are also clippings of three memoiristic articles by Tkachenko.