MERKULEVA, Kseniia and NALETOV, A. Prikliucheniia 38 rebiat. Biblioteka Leninskikh Iskr. St. Petersburg: Krasnaia Gazeta, 1929. Oblong 2° (290 x 455mm). Illustrations throughout. (All leaves repaired in the inside margin, numerous repaired tears.) Original illustrated wrappers (rebacked, repaired, worn, stained). Provenance: Russian bookseller (numerous stamps). [With:] PAKHOMOV, A.F. Sovetskie rebiata. Moscow: Ogiz Izogiz, 1938. 2° (335 x 250mm). 8 colour plates, illustrations throughout. Original cloth-backed boards, illustration mounted on the upper side (lower fore-corners worn, extremities rubbed). Provenance: 'printed in the Soviet Union' (import stamp on the title). [And:] DEBABOV, D. Sledopyty daleko severa. Moscow and St. Petersburg: Detizdat Ts. V.L.K.S.M., 1937. 2° (285 x 220mm). Blue-tinted photogravures throughout. Blue cloth-backed illustrated boards (corners worn, extremities rubbed, some soiling). [And:] 16 others, various formats, various dates c.1929-c.1946, in original cloth or original wrappers (some worn), including four Ukrainian 'Molodii Bil'shovik' publications. (19)