516 N. Park, Helena, Montana. County/parish: Lewis and Clark.
Added to the National Register of Historic Places March 22, 1991. NRIS 91000333.
1 contributing building.
The Olsen House is a historic house in Helena, Montana. It has been listed on the National Register of Historic Places since March 22, 1991. It stands opposite St. Peter's Cathedral.
(read more...)National Park Service documentation: https://catalog.archives.gov/id/71976132