English: No permission is required for the following reasons:
A search was conducted through the U.S. Copyright Office [2], and there is NO record that this was subsequently registered within a reasonable time of years of since the publication. As such, the opportunity for copyright protection on the photo was forfeited and it entered the public domain.
The source images linked above are mechanical scans of the underlying public domain work. These scans are faithful reproductions of the photograph that do not meet the threshold of originality necessary to assert a copyright interest. And therefore this work of the unknown author is in the public domain
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.