Donald Duck in comics birth. According to Carl Barks, Donald's parents are Hortense McDuck and Quackmore Duck. Donald’s sister is named Della Duck, but neither she nor Donald's parents appear in the cartoons or comics except for special cases, like "The Life and Times of Scrooge McDuck". According to Rosa, Donald and Della are twins. Taliaferro introduced Donald's car, on July 1, 1938. It is recognizable by its license plate number "313". Though Donald briefly drove other cars both in Taliaferro's strip and in later stories, this car would stay with Donald throughout the following decades. The car's constant breakdowns and need of repairs
The Oregon Duck logo. Relying on the photo as evidence of Disney's wishes, in 1973, both parties signed a formal agreement granting the university the right to use Donald's likeness as a symbol for (and restricted to) Oregon sports. The agreement gave Disney control over where the mascot could perform and ensured that the performer inside the costume would "properly represent the Donald Duck character." In 2010, Disney and the university reached an agreement that removed the costumed Oregon Duck mascot from its association with the Donald trademark, and allowed The Duck to make more public appearances, such as at college mascot competitions.