Here's stuff from the March 1936 issue of another humor magazine that predated Mad, probably inspired by college humor magazines, some of which they reprinted material from.
Russell Patterson did most of the covers for this, and a collection of his work is available through Fantagraphics
Many of the one-panel cartoons were drawn by Chester Garde, who I have almost no information on, except that he did a lot of cartoons about the Depression.
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