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
Donald Duck and Karp created an even larger cast of characters for Donald's world. He got a new St. Bernard named Bolivar, and his family grew to include cousin Gus Goose and grandmother Elvira Coot. Donald's new rival girlfriends were Donna and Daisy Duck. Taliaferro also gave Donald his very own automobile, a 1934 Belchfire Runabout, in a 1938 story, which is often nicknamed by Donald's "313" car plate in the comic incarnation of Donald's world. In 1942, Western Publishing began creating original comic-book stories about Donald and other Disney characters. Bob Karp worked on the earliest of these, a story called