There is a very nice paper for Information Architecture (which is only a module of what you're probably asking) here
If you feel that, that is what you're looking for, you might want to take a deeper look into Information Architecture for the World Wide Web: Designing Large-Scale Web Sites
Although IA doesn't solve the problem directly, you'll find that it provides you with a solid ground for requesting the content strategy.
Furthermore, when you're ready you want to have a closer look into the content of the content strategy, I read Inbound Marketing: Get Found Using Google, Social Media, and Blogs (New Rules Social Media Series) book and I found it very clear, nice and helpful.
I'm pretty sure, you'll find both reads (and the paper) compelling to your case. If you don't have the time to read the whole thing, take a look at the summary and search google for the topics, you'll find plenty of information.