Mork's attic features an upside down Star Wars: Episode IV - A New Hope (1977) poster. This episode was first broadcast on November 16, 1978 on ABC. The infamous The Star Wars Holiday Special (1978) was broadcast on CBS the next night.
This episode shows Mork's attic room for the first time.
In this story when they are having milk the name of the dairy "Lucerne" is on the side of the milk carton. In next week's show when they are having milk with their PB&J sandwiches the same type of milk carton is used only this time half of the name has been blocked out with white tape. The producers must have adapted to not showing actual product names on the show at this time.