Duck family (Disney) strip, Della writes to Donald that the boys had placed a firecracker under their father's chair as a prank and that their father had been sent to the hospital. This was the reason why the boys first showed up at Donald's house. Thereafter the father is generally assumed to have disappeared. In "The Richest Duck in the World", when Scrooge mentions that the few family members he had had disappeared, the boys respond "We know how "that" feels!" Donald's cousin Fethry Duck was created for the Disney Studio Program by Dick Kinney and Al Hubbard and was first used in
How to Read Donald Duck of his non-fiction works: "How to Read Donald Duck" and "The Empire's Old Clothes" (1983). According to McClennen, a strength of the former work is its critical analysis of the fictional world inhabited by the Disney characters. The characters in question have formulaic ethics and resolve their problems in simplistic ways. The work critiques the superficial depiction of the world by the Disney comics, and the roles the Third World and the working class play in the stories. "How to Read Donald Duck" analyzes the internal ethical logic of the Disney comics. The writers hoped to unmask the "false innocence"