The article is really nice and I'm going to find some of the examples of those newsletters from 40's and 60's. … and then it felt like it turned into advertise

The article is really nice and I'm going to find some of the examples of those newsletters from 40's and 60's. … and then it felt like it turned into advertisement of certain publishing service. It would sound much better if they mentioned several rival services instead of one or if they didn't mention any one at all