Don Firth gave us a link to Prince Valiant. I remember that when I was a kid, PV was the front page feature of Puck the Comic Weekly, and took up about 2/3 of the page. Each panel was an picture worthy of being a book illustration ala Howard Pyle. It is a marvel that Hal Foster could do one page each week, even with the help of inkers, and letterers that he probably had. To this very hour, it is still, IMO, the best illustrated comic bar none.