Since I write mystery novels set in Memphis, TN during the 1940's. I have had some inquiries about where I do my research.
I start with Google, but I also go to local public archives. Sometimes Peter English, the private investigator who is the main character in these books, has to go outside Memphis to other cities and states. And other characters may show up from Chicago, New York, Miami and even some prisons in other states. I have to research all these locals, as well as police departments and other things from these areas.
But I have a very special ace in the hole in Memphis, Jimmy Ogle, the Official Historian of Memphis. He is a walking, talking treasure trove of information, history and even images.
I have mentioned my research online, so now people are sending me sites for historic information. Please keep it coming!