Kurtis Scaletta, author of middle-grade novels (The Tanglewood Terror, Mudville, and Mamba Point, all from Knopf), recently launched a new chapter book series of baseball mysteries, Topps League. I had some questions for him. I’ve tried my hand at chapter books — short books that act as a transition between easy readers and middle grade — but I hadn’t found many resources about writing them. Rather than just pestering Kurtis for insights and hoarding them for myself, I asked him to write a guest blog for Operation Awesome. He generously agreed.