We're pleased to announce the addition of 409 building entries to SAH Archipedia, illustrated by 424 photographs, from the just-published Buildings of North Dakota volume by Steve C. Martens and Ronald H. L. M. Ramsay, with 100 of these freely accessible via SAH Archipedia Classic Buildings. This new content provides the first comprehensive overview of the state's architecture, from the historic "prairie mosaic" of Native American cultures and European settlers to more contemporary sites dating from Progressive-era boom times and the New Deal to the present.