This one's a real mystery. For a time during the mid-1950's, a cartoonist/illustrator who signed his work 'Ressler' regularly provided the artwork for a back-pages feature in The Saturday Evening Post called "People Are Like That".
I have never seen any other artwork in any other publication with that signature, and The Post never had Ressler work on any other features (as far as I know). An internet search proved fruitless, and Ressler is not listed in any volumes I own collecting information on illustrators or cartoonists.
Ressler's semi-cartoony style holds a lot of appeal for me. He was no slouch with pen and ink. His work reveals a good sense of observation... and a sharp wit.
Perhaps some day we'll find out more about Ressler -- but for now, all we have are these examples of his work.
My Ressler Flickr set.