Cartoonist John F. Hart was a Philadelphia newspaper institution in the 1900s-20s, but his work was mostly in puzzles and non-series cartooning. When he occasionally dipped a toe in that end of the pool his art made you want more, but his lack of ability as a comic strip writer made you wish he practiced a little more before inflicting his work on the unsuspecting public.
Here is Jawnny Grin, which offered an admittedly out of the ordinary gag for the comics page; the basic idea is the same ole same ole, a bratty kid. But this kid has a beaming smile that can get him out of any sort of hot water. Unusual, yes, but the execution is so inept that the gag needs to be explained in the title bar.
Philadelphia North American readers only had to put up with this stinker once, but it ran in the North American’s syndicated comic section several times between June 3 and July 29 1906*.
Thanks tyo Cole Johnson for the scan.
* Source: Boston Post