I'm actually trying to put together a complete run of John D. MacDonald's science-fiction stories. He did a total of 53, a handful of which are under the pseudonyms of John Wade Farrell and Peter Reed; all but one of those are because he did more than one story in the issue so there's only about 45 issues to actually get. (Plus, in theory, the first editions of 2 of his 3 SF novels; one appeared in a pulp originally, one was later reprinted in a pulp, and the 3rd was from the 60's and never had a magazine appearance that I know of.) 4 to go, not counting first edition non-magazine versions of the novels.
His SF work has a distinctive voice; the best way I can describe it is hard-boiled. It brings a sensibility I normally associate with detective stories to Science Fiction; much more character driven than the normal Hard Science or Science Fantasy stuff you see. It doesn't really feel like what happened in the 80's when people tried it and called it Cyberpunk, though. Fun stuff.