I have been given a set of Computer News 80 newsletters. Volume 1.1 through 2.2. I will post copies if it's legal..Contact me if you're looking for these. I have not found an online archive.
Doing a little checking I have learned that Computer News 80 was created by a man named Stan Slater (who passed away) to fill the void left when Micro 80 stopped writing about the TRS computers in order to focus only on the Tandy DOS line.
I have a copy of the last Micro 80 with TRS 80 articles, there was an editorial about the decision to stop covering the TRS 80 line. That was 1987. The same year I started by internship at IBM.