For 10 points, identify this American author of such collections of "flash fiction" as Forty Stories and Sixty Stories, the brother of fellow authors Steven and Frederick.
This author wrote of a group of friends planning the elaborate hanging of a man who had "gone too far" in his story "Some of Us Had Been Threatening Our Friend Colby". He also wrote a story in which The President takes a sledgehammer to a sculpture called Season's Greetings, one of many unusual things that happen after Peterson agrees to appear on the game show Who Am I?. The narrator of another of his stories reminisces about fixing a bicycle seat for his child, who he otherwise resents, and about breaking his nine-cocktail rule during a fight with his Elle-obsessed wife Wanda. This author of "A Shower of Gold" and (*) "Critique de la Quotidienne" also published the collection Come Back, Dr. Caligari and such novels as The King, The Dead Father, and the fairy-tale adaptation Snow White. For 10 points, identify this American author of such collections of "flash fiction" as Forty Stories and Sixty Stories, the brother of fellow authors Steven and Frederick.
This author wrote of a group of friends planning the elaborate hanging of a man who had "gone too far" in his story "
{Donald Barthelme} [prompt on partial answer]