And its free!
Galaxy Magazine, which hit news stands from 1950 to 1980, is now available for free (and legal!) download over here:
https://archive.org/details/galaxymagazine
There are plenty of fascinating stories to be found in the various issues of the magazine and, credit where its due, I found out about the availability of these issues via the below story, written by Matt Novak and found on gizmodo.com: