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Helena in Lewis and Clark County, Montana — The American West (Mountains)
 

488-490 West Main Street

Helena Historic District

 
 
488-490 West Main Street Marker image. Click for full size.
Photographed by Barry Swackhamer, July 15, 2021
1. 488-490 West Main Street Marker
Inscription. Two distinct front porches attest to the separate histories of these two nineteenth-century homes, combined into one in the late twentieth century. The older of the two at 490 West Main was built between 1865 and 1875. Segmentally arched windows and doors with carved wooden heads typify Helena’s first substantial homes. Inside, original woodwork and fourteen-foot ceilings throughout preserve the ambience of the earliest territorial period. A cabin of round notched peeled logs to the south recalls the first mining phase of West Main Street. The house at 488 was built between 1875 and 1888. The modest dwelling has a small room addition with a private entrance to accommodate boarders. A steep, narrow stairway leads to a second-story bedroom. Samuel Dempster and his large extended family occupied the home from 1890. A mining accident claimed Samuel’s eyesight prompting the Dempsters to move across the street in 1896, likely for the rental income from this residence. Samuel died in 1901 and the property passed out of the family. Numerous iron tie-rods, a consequence of the 1935 earthquakes, reinforce the brick of both homes.
 
Erected by Montana Historical Society.
 
Topics and series. This historical marker is listed in these topic lists: Architecture
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Disasters. In addition, it is included in the Montana National Register Sign Program series list.
 
Location. 46° 34.895′ N, 112° 2.809′ W. Marker is in Helena, Montana, in Lewis and Clark County. It is on West Main Street near Carriage Lane, on the left when traveling west. Touch for map. Marker is at or near this postal address: 488-490 West Main Street, Helena MT 59601, United States of America. Touch for directions.

Regionally, this marker is in andspecifically entral Montana in Gold West Country. It is also in the American Mountain West and in the Lewis & Clark Corridor. Globally, it is in North America, the Rocky Mountains, the Western Hemisphere, the Western World, and the Anglosphere. Historically, it finds itself in what was once Rupert’s Land and also the Louisiana Purchase.

Other nearby markers. At least 8 other markers are within walking distance of this marker: Elisha and Joseph Poad House (a few steps from this marker); Samuel Dempster House (within shouting distance of this marker); Kluge House (about 400 feet away, measured in a direct line); B.K. Tatem House (about 700 feet away); Last Chance Gulch (approx. 0.2 miles away); Lawrence and Amanda Beaver Residence (approx. 0.2 miles away); Helena West Main Street Historic District (approx. Ό mile away); Reeder's Alley (approx. Ό mile away). Touch for a list and map of all markers in Helena.
 
488-490 West Main Street Residence and Marker image. Click for full size.
Photographed by Barry Swackhamer, July 15, 2021
2. 488-490 West Main Street Residence and Marker
 
 
Credits. This page was last revised on January 10, 2025. It was originally submitted on December 5, 2021, by Barry Swackhamer of Brentwood, California. This page has been viewed 271 times since then and 20 times this year. Photos:   1, 2. submitted on December 5, 2021, by Barry Swackhamer of Brentwood, California.
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Jun. 29, 2026