Author and award-winning model railroader David Leider will conduct a PowerPoint lecture about the Soo Line Railroad and its important ties to Grayslake on Saturday, April 12 at 2 p.m. Leider is the President of the Soo Line Railroad Historical Society and grew up in Des Plaines within sight of the Wisconsin Central Railroad, later the Soo Line. He is the author of "The Wisconsin Central Railroad in Northern Illinois" and is currently researching and writing a book about Chicago area railroads.