National Register of Historic Places
Olsen House
Helena, Lewis and Clark County, Montana
The record
- Listed
- March 22, 1991
- Type
- Building
- Address
- 516 N. Park, Helena
- County
- Lewis and Clark
- State
- Montana
- Period of significance
- 1875 to 1924
- Contributing resources
- 1 building
- Coordinates
- 46.59245, -112.04047
- Reference number
- 91000333
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