Galaxy was a very important magazine for the science fiction literature, but slightly off-topic question: is the content really supposed to be public domain?
For everything published in 1950 the original copyright length was 28 years, but it was retroactively extended with the 1976 copyright act. Or is it another case of unregistered copyright, like Night of the Living Dead?
"For everything published in 1950 the original copyright length was 28 years, but it was retroactively extended with the 1976 copyright act."
Not necessarily. Works published prior to 1964 have fallen into the public domain in the United States unless the owner explicitly filed a copyright renewal.
Anything published in 1964 or afterward did get automatic renewal and extension to the new 95 year period under the 1992 Copyright Act, so the magazines after 1964 are definitely questionable.
The Stanford library has a database that lets you look up the copyright status of post-1923 (before that is definitely public domain), pre-1964 works.
the magazine itself may be out of copyright but not necessarily all of its content. for example stories would revert to the writers copyright, which is how writers make more money off of successful stories going in anthologies etc.
