This advertisement (or image from an advertisement) is in the
public domain
because it was
published
in a collective work (such as a periodical issue) in the United States between 1929 and 1977 and
without a copyright notice specific to the advertisement
. Unless its author has been dead for several years, it is
copyrighted
in jurisdictions that do not apply the
rule of the shorter term
for US works, 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. See
this page
for further explanation.
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