I have been looking online for some information I need to write my most recent book. Anyway, amazingly sometimes it is hard to find what you need, even with Internet. That said, I noticed a lot of history stuff, even obscure, is summarized very nicely on bbc.co.uk. Here is a sample: if you are writing a mystery or a historical novel, they could be a great source: http://www.bbc.co.uk/dna/h2g2/A4037212.
René Daniel, the site founder, physician, scientist (gene therapy, HIV, aging) and a writer of adventure and fantasy novels. His first novel, Spear of Seth, is set in the ancient Egypt Underworld. His second novel, The Last Secret of Nikola Tesla ( an unknown Tesla's legacy leads to Indiana Jones-like adventure in Egypt).