Cleveland Municipal Stadium opened in July of 1931 under the name Lakefront Stadium, but it would be a few years before one of the largest ballparks in baseball had its own electric scoreboard. This 36" x 23.5" blueprint for that piece of machinery lays out the design that generations of Indians fans would come to know as the information center for the cavernous venue that seated over 80,000 fans for football. Included in this layout are space for a promotional date in the upper-left corner, below which are circuits for umpire numbers, balls/strikes/outs, current batter number and linescore across the bottom. The upper-right portion is dedicated to three other linescores for out-of-town games, presumably for the other six American League teams at the time. On the far right is a schedule of signs table. There are also some nifty, hand-written notations indicating improvements such as wider spaces. This terrific piece of baseball and architectural history comes via the Osborn Engineering Company of Cleveland, which was also responsible for renovations at other stadiums such as Boston's Fenway Park.