This just in from Nicolas Roudier:

[For two years now, I worked hundreds of hour in the creating a database with a website interface that classifies in an exhaustive way the duck stories of Carl Barks and Keno Don Rosa, and allows for multi-criteria detailed searches. I finished recently and you can see the English version here: http://duckstories.free.fr. There are still one or two sections in development and a few more in preparation.]