English: Screen capture from the cartoon Box Car Blues. Pictured are Bosko and the banjo playing pig as they sing and roll along in a box car.
A copyright search was done for renewals in film for the years 1957 and 1958. There were no listings for the title Box Car Blues. There's no evidence this continues to be under copyright.
Note that it may still be copyrighted in jurisdictions that do not apply the rule of the shorter term for US works (depending on the date of the author's death), such as Canada (70 years p.m.a.), Mainland China (50 years p.m.a., not Hong Kong or Macao), Germany (70 years p.m.a.), Mexico (100 years p.m.a.), Switzerland (70 years p.m.a.), and other countries with individual treaties.
{{Non-free use rationale |Article=[Box Car Blues] |Description=Scaled down screen capture from DVD ''Uncensored Bosko #1'' |Source=Scaled down screen capture from DVD ''Uncensored Bosko #1'' |Portion=A screenshot of the cartoon is used, without accompanyi
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