R
rafbig-ac
Maps like this are very helpful to us as Architects as we use them to develop shadow studies in REVIT. Given this you may want to consider taking City Maps and offering smaller map boundaries. The 50 x 50 square mile map is very large and difficult to manipulate in some software and nearly impossible to crop.
Please consider dividing your City Maps into several sections and allow the purchaser to choose sections that are applicable to the task.