This work is in the public domain in the United States because it was published in the United States between 1929 and 1977, inclusive, without a copyright notice. For further explanation, see Commons:Hirtle chart as well as a detailed definition of "publication" for public art. 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 (50 p.m.a.), Mainland China (50 p.m.a., not Hong Kong or Macao), Germany (70 p.m.a.), Mexico (100 p.m.a.), Switzerland (70 p.m.a.), and other countries with individual treaties.
Dette verket er offentlig eiendom i Norge, EU og land der den opphavsrettslige vernetiden etter opphavsmannens død er 75 år eller kortere. Merk at noen land har lengre vernetid.
For å kunne lagres på Commons må verket både være offentlig eiendom i USA og i opphavslandet. Vernetiden kan i noen tilfeller være lengre enn 80 år i USA, så i tillegg til dette merket trengs det et eget merke som forklarer hvorfor verket er offentlig eiendom (public domain) i USA. Note that a few countries have copyright terms longer than 75 years: Mexico has 100 years, Jamaica has 95 years, and Colombia has 80 years. This image may not be in the public domain in these countries, which moreover do not implement the rule of the shorter term.