Author David Robertson, a professor of practice at the Wharton School at the University of Pennsylvania, will share his newly published book, "Brick By Brick: How Lego Rewrote the Rules of Innovation and Conquered the Toy Industry," on Tuesday, July 23, at 5:30 p.m. at the Des Moines Central Library. After being on the brink of bankruptcy 10 years ago, Lego has grown sales at 24 percent per year for the past five years, and Robertson, will talk about Lego's process that created a blueprint for the most effective ways to innovate and lead. To learn more about the event, click here.