A huge revision of The Intuitive Explanation of Bayesian Reasoning is in progress, aimed at being considerably more accessible and hence with a lot more graphics. I need someone who can turn out versions of the illustrations that are technically accurate enough to try on beta readers, fast enough and reliably enough that I can ask for revised versions of the illustrations a day later if the beta reader says they didn't understand it. There is a Google Doc in progress which you would be given permission to edit, containing some hand-drawn attempts on my part to indicate what the illustrations should look like, and a number of finished illustrations from an illustrator who unfortunately cannot put in any further work on this job.
For this job, technical accuracy (i.e., if a ratio is 3:4, it should not look like 1:9), understandability, and speed is much more important than beauty - the idea is to get as quickly as possible to a working version with understandable illustrations that has been verified by the beta readers.
If interested, email me at yudkowsky@gmail.com.
Not directly relevant to finding an illustrator, but relevant to designing the illustrations... did you see http://oscarbonilla.com/2009/05/visualizing-bayes-theorem/ ? I find the Venn Diagram visualization of Bayes Theorem to be the most intuitive.
If we're plugging visualizations of Bayes, I happen to like this one. :-)