The Press was the big paper in town, even though 6 days a week it was the evening paper. The P-G was in the morning. The Press was the only one on Sunday via the joint operating agreement. The Teamsters strike just did the Press in, or, well, they (Scripps) gave up on it with the strike, perhaps that is closer to the truth.
It's never been even close to the same since, of course. There were huge spikes in local circulation of USA Today and NYT during the strike as I recall. I was young, and I hadn't even lived here a year, but I was here. The strike was almost a year I think! Several months anyway. Insane. The circulation never all flowed back to the merged P-G/Press, of course. The P-G didn't have the same recognition at all, especially outside the area. I used to snicker at it. For a year or two (maybe more?) underneath the P-G name on the front it said "And the best of the Pittsburgh Press" or something close to that. Then, when they finally decided it was okay to ditch the even the small print Press name from the front page, they instead put "One of America's great newspapers". Yeah, right. If you have to proclaim it yourself, it ain't true!
Honestly, thinking of it again, anyone know why they didn't just call the merged paper the Press instead? Seems like that would have been obvious. Or create a new merged name that incorporated Press, like Press-Gazette? I think they would have been better off. People relate to the familiar around here; you'd think the newspaper folks would understand that!
Since that was about 18 years ago, and I didn't grow up here, I don't remember much about reading the Press. But in those early days of my time here, if I bought a paper, the Press is what I got. Was probably the Sunday that I read most anyway.