Playboy has digitized a bunch of its old issues and you can read them here for free (obviously NSFW).
Yes, the pictures are intact, but there’s probably a lot more efficient ways to acquire a lot raunchier porn on the web than by leafing through these archives.
What I find pretty interesting is that the entire mags are digitized. Everything from the articles to the ads to the at-one-time infamous Playboy Interview is here, and the earliest issue is from 1954 (the latest is 2006). Leafing through the early issues gives a pretty interesting look at the “bachelor culture” of the times.