A scan of the back side of the dust jacket is not available, so the lack of a copyright notice is not certain. However, at least one dust jacket featuring the same cover art, but from a different printing, is known to be published without a copyright notice.
Thus it is reasonable to assume that the back side of the dust jacket does not have a copyright notice.
Public domainPublic domainfalsefalse
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.
A scan of the back side of the dust jacket is not available, so the lack of a copyright notice is not certain. However, at least one dust jacket featuring the same cover art, but from a different printing, is known to be published without a copyright notice.
Thus it is reasonable to assume that the back side of the dust jacket does not have a copyright notice.
Public domainPublic domainfalsefalse
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.