They're from before my time, but I have a bunch of usergroup newsletters/small magazines from the 1970s and 1980s that are a little more specific than Dr. Dobbs and BYTE: stuff like INSUA (North Star usergroup publication), PEEK 65 (6502 and largely Ohio Scientific), and FORTH Dimension (FORTH language specific). Good stuff, not a ton of adverts. For a few of them I have the whole or very nearly whole set, and have read through them. It's somewhat sad reading through the last issues, as most of the usergroup size publications seemed to know the end was near.