Parma Eldalamberon - Where is it?

[ArcusCalion]

This thread's purpose is a fairly obvious one from the title, but I have long heard about the various writings contained in the Parma Eldalamberon zine that published various Tolkien linguistic writings, primarily from early in his concept of the legendarium. However, they do not seem to be available anywhere, and I was hoping someone who has knowledge of them might be able to direct me to where I might find them, whether online or irl. It would be a huge help.