are pages of drawings of characters done by the leading artists.
They are done for two reasons. First, the sheets enable the
artists to control the characters' appearances, specific
features and relative heights. Second, they provide a platform
for new artists to start out from. Barks did several modelsheets
but he did not produce them for the first reason, (as he once
announced that he never followed them anyway.) He made them
because he was asked to by his employers.
Barks made his first modelsheets when he started at Disney's, some of which portrayed Donald Duck and Mickey Mouse. Just for the sake of nostalgia the modelsheet which he made for his second cartoon titled Donald's Ostrich from 1937 is reproduced below. You will also will find a few examples of modelsheets that cover a large part of his comic book career.
Click on any of the thumbnail pictures below for an enlarged image of the modelsheet.