1968 film by Viktor Sadovsky

short novel by Lev Kassil

1962 Soviet film by Lieŭ Holub

novel by Lev Kassil

1954 animated film by Vladimir Degtyaryov

1931 novella by Lev Kassil

1971 film by Viktor Sadovsky

1946 film by Erast Garin

1934 Soviet film directed by Lev Kuleshov

novella by Lev Kassil

Soviet film (black and white)

animated film directed by Viktor Gromov

novel by Lev Kassil and Maks Polyanovsky