Input (grade 8): The comic strip story "Mr. Slicker and the Egg Robbers" (published September 22 December 26, 1930) introduced her father Marcus Mouse and her mother Margie Mouse, both farmers.
Output (grade 6): His name was introduced in the comic strip story "Mr. Slicker and the Egg Robbers" (published 22 September - 26 December, 1930).