Sunday Morning Bonus Pulp: Top-Notch Magazine, May 15, 1928
This scan comes from David Lee Smith. TOP-NOTCH published some good fiction, although I've never considered it one of the top tier of pulps (despite its name). I don't recognize the names of any of the authors in this issue except Eugene Cunningham, but I'm sure most of the stories are pretty good. And that's a nice, action-packed cover. No idea who the artist was.