I found a really neat book on Google Books the other day that would be a great resource for developing some background and depth to your Non-Player characters who inhabit the wrong side of the law. Grannan’s Pocket Gallery of Noted Criminals (link) was published in 1889 and features nicely rendered drawings of several dozen of the “slickest criminals” and “cleverest crooks” that ever preyed on the public. With each picture is a short thumbnail summary of the man’s crimes and physical description. Western gamers can take the page straight from the book as is or better yet, the picture can be used to create a “most wanted” flyer. A little bit of MS Paint or PowerPoint can result in a nice wanted poster–the one above took me about 10 minutes.