Literature Databases
Brand Databases
Industry Information
Other Resources
You may want to identify different Business to Business marketing strategies that a brand could employ. You could evaluate these different strategies for your specific context and look for examples of how you might turn this into a deliverable. You may want to find what some key information sources for companies or professionals in the target industries are to get a better feel for the industry.
If you want to find annual reports or shareholder documents that describe corporate values for a particular company, you can Google the name of the company + 'Investor relations'. Most annual reports will include at least a few clues about what a company's values are (this would be limited to publicly traded companies.) For privately owned companies, the 'About Us' or 'Who We are' section of a website would also provide some of that information to serve as inspiration for what sort of values you want to convey in your brand.