These original drawings are his gag suggestions which he submitted. Graphite and colored pencil, four panels per page, with numerous production notes in the margins. Each panel measures approximately 4" x 5"; on 10" x 12" animation paper.
This next gag takes place over three pages.
Gag images via Profiles in History.
An article on Carl appeared in the 1992 periodical, Comics Scene Yearbook, and it featured a painting by him of a a toy room scene. The focus was on the ducks, of course, but Snow White makes an appearance too.
Comic Scene Yearbook image scans courtesy of Dan Alexander Dizmentia.
Carl passed away in the year 2000 at the age of 99.