This work is in the public domain because it was published in the United States between 1978 and March 1, 1989 without a
copyright notice, and its copyright was not subsequently
registered with the U.S. Copyright Office within 5 years. Unless its author has been dead for several years, it is copyrighted in the countries or areas that do not apply the
rule of the shorter term for US works, such as Canada (50 pma), Mainland China (50 pma, not Hong Kong or Macau), Germany (70 pma), Mexico (100 pma), Switzerland (70 pma), and other countries with individual treaties. See
this page for further explanation.
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.
Earliest date stamp on back of photo is April 20, 1978. Her latest film until that time was in 1977. There is no other free image of Bach available. See also
film still, which explains that publicity photos were traditionally not copyrighted.