Do you think you are a fast artist?
Well after looking at this sheet written by Carl Barks ca 1952 you might have to re-think that. (Click on image to enlarge.)
The speed he had while doing some of his finest stories (Both when it comes to scripts and artwork) is stunning.
Only 1h 15minutes to rough a page and then 1h 20min to ink from those roughs! And still beeing able to maintain high quality. I mean we are talking about such stories as "Donald Duck and the gilded man" and "Trick or treat" here...
As a bonus to this post here's a small but rare photo of Barks at his drawingboard: