These are the first writing reference books I bought, the Howdunit series from Writer’s Digest. I didn’t get the all at once as a group but over the course of my junior and senior years of high school. Some of these books are 20 years old! I can’t remember the first one I bought, possibly the Police Procedural one? Because I was such a huge fan of Law & Order and In the Heat of the Night. These books set me on the path of writing mysteries, and I still keep them close on the bookshelf behind my desk. I can’t imagine not having them close at hand, just in case I need them!