Pulp Magazine Archives
Let me bring this link to your attention. It is the Pulp Magazine archives:
https://archive.org/details/pulpmagazinearchive?&sort=-downloads&page=2
I must say, however, that this particular page opens up to magazines from the 1970’s that I have on my bookshelf even now. I may be old, but I am not that old. Most Sci-Fi historians (if such an absurdity can be imagined) would, I assume, place the end of the glory days of pulp somewhere around the beginning of the Golden Age of Hard SF, early in 1940, when John W Campbell Jr took over Astounding, and brought aboard Isaac Asimov, Robert Heinlein and A.E. van Vogt. By 1970, the pulps properly so called had been gone from the newsstands for thirty years.
However, if you scroll down, I can personally recommend WORLDS OF IF from February 1972, particularly ‘Patterns of Chaos’ by Colin Kapp.