Since you didn't specify the name of the magazine so here is a general guideline for downloading any mix in which is available on public domain.

If you are looking for any magazine which is available publicly then you can just type the name of the magazine and after that write PDF and if that Magzine is available on the internet then you will get links and the top of the Google search just go to the official website, sometimes official websites are not providing free copies and some other websites give copies of the magazine so you can check that links also.