
I used to love a site that has a name like ask experts.com . I know that name is a bit off but try a few variations. Other than sites of this kind, you can email to virtually every library and ask them a question. Try specialized libraries too, like the branches of the Library of Congress or the Smithsonian. They secretly love to asked questions on their specialities. I once wrote the Smithsonian and asked them what day the USA came into being. We wrote back and forth a few times because I challenged them on their answers.