File:Sebastian ad4a.tiff

John Sebastian, classical harmonica player

Ad on p.37 of October 10, 1953 Billboard magazine.

c. 1953

Unknown

This work is in the public domain because it was published in the United States between 1931 and 1977 inclusive, without a copyright notice. Unless the author has been dead for several years, it is not in the public domain in countries that do not apply the rule of the shorter term for US works. This includes Canada, China (not Hong Kong, Macao, or Taiwan Area), Germany, Mexico, Switzerland, and other countries with individual treaties. See also further explanation.

PD-US Public domain in the United States //en.wikipedia.org/wiki/File:Sebastian_ad4a.tiff

• The ad appeared in a 1953 issue of Billboard and can be dated from that publication; it is pre-1978.
• There are no copyright markings on the ad as can be seen at the full view link.
• The ad is not covered by any copyrights for Billboard.
• US Copyright Office page 3-magazines are collective works PDF

"A notice for the collective work will not serve as the notice for advertisements inserted on behalf of persons other than the copyright owner of the collective work. These advertisements should each bear a separate notice in the name of the copyright owner of the advertisement.