Norman Carlson, president of the Shoreline Interurban Historical Society, speaks at a Lake Forest-Lake Bluff Historical Society lecture commemorating the 50th anniversary of the closing of the North Shore Line. | Rob Hart~Sun-Times Media

Norman Carlson, president of the Shoreline Interurban Historical Society, speaks at a lecture commemorating the 50th anniversary of the closing of the North Shore Line at Lake Forest College on Sunday. | Rob Hart~Sun-Times Media

Norman Carlson, President of the Shoreline Interurban Historical Society shows photos during a talk at Lake Forest College Jan 27, 2013 in Lake Forest. The Lake Forest-Lake Bluff Historical Society hosted the lecture commemorating the 50th anniversary of the closing of the North Shore Line, an electric interurban railway between Chicago and Milwaukee| Rob Hart~Sun-Times Media

Norman Carlson, president of the Shoreline Interurban Historical Society, showed photos during a lecture on Sunday commemorating the 50th anniversary of the closing of the North Shore Line. | Rob Hart~Sun-Times Media

Norman Carlson, president of the Shoreline Interurban Historical Society, showed photos of the once-popular trains during a lecture on Sunday commemorating the 50th anniversary of the closing of the North Shore Line. | Rob Hart~Sun-Times Media

Norman Carlson, president of the Shoreline Interurban Historical Society, showed photos of the once-popular trains during a lecture on Sunday commemorating the 50th anniversary of the closing of the North Shore Line. | Rob Hart~Sun-Times Media

Norman Carlson, president of the Shoreline Interurban Historical Society, showed photos of the once-popular trains during a lecture on Sunday commemorating the 50th anniversary of the closing of the North Shore Line. | Rob Hart~Sun-Times Media