I don't really know much about this title (other than it at least began with newspaper reprints), so let's just enjoy the gallery of Popular Comics... By the 10's!
No scan for issue 30's cover, so here's issue 40!
Issue 50, and it looks like it's a lot of new material by this point!
Issue 60, cover featuring Professor Supermind and Son, it appears!
Issue 70, and the newspaper reprints are taking the lead spots again!
Issue 120! I didn't expect Felix the Cat! I'm guessing he's featured in original material...
Issue 140, which wraps up this By the 10's!