Vintage Real Photo Postcard. Identified as Black Butte and elevation sign, the highest point in North Dakota in Bowman, North Dakota. Divided back, unused. Condition: This is an original photo postcard, not a copy or reproduction. It is in excellent condition aside from some browning on reverse side. Comments: Bowman is a city and county seat of Bowman County, North Dakota, United States. Its population was 1,650 at the 2010 census. Bowman was founded in 1907 at about the same time the railroad was extended to that point. The city took its name from Bowman County.