A list of baseball research tools from John Thorn

I have a confession, one that I doubt makes me different than countless other baseball bloggers, but a confession nevertheless. Too often, what I call research for this site basically consists of me going to Baseball-Reference.com, Wikipedia, or the SABR BioProject. I combine this perhaps with references to a handful of great baseball books, the occasional interview, and a healthy dose of my opinions, assorted knowledge, and analysis, and most times, it equals a readable post. I get nice feedback for this site, but I also know I'll need to go deeper in my research in order to write about baseball professionally. Right now, I feel a bit lazy in what I do here and that there's not a whole lot to set my work apart. Spurred on by these thoughts, I sent an email last week to official Major League Baseball historian and prolific baseball writer John Thorn. I've corresponded with Thorn for the past couple of years and even interviewed him by phone after he got the MLB historia...