I recently saw a few Maples in Sandusky Ohio which appeared to be Norways. They were about 40 feet tall and the whole crown was maybe 5 feet in diameter, all the way up. They are a nearly perfect cylinder shape. the first crotches are no more then 6 feet off the ground. The branches go nearly perfectly straight up. I found that there is an Acer platanoides "columnar", which has a crown diameter of 15 to 20 feet. These trees are nowhere near that wide. I could not get a photo of them, but I will try. Does anyone know exactly what they might be? Thanks fred