Welcome to the Lewis & Clark County Historical Society
Lewis and Clark County Historical Society History Center is now open Thursdays and Fridays from 10am to 5pm and Saturday from 10am until 3pm, in the historic Steamboat Block, at 618 Helena Ave. in downtown Helena! While you’re there, be sure to stop in the museum store with books, t-shirts, etc. in honor of our generous benefactor Will Greiner.
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Events
More eventsWe host a variety of events throughout the year, including lectures, workshops, tours and more. Check out upcoming gatherings to learn, explore, and connect with others who share a passion for local heritage.
July Monthly LCCHS Meeting
Your Board of Directors meet every second Tuesday of the month at noon in the History Center. Members and guests are most welcome! The annual members’ meeting and the President’s annual report to the community is held on the first Thursday of June. Members are welcome!
Date: July 14, 2026
Time: 6:00 PM
Location: 618 Helena Ave.
The Montana Constitution Road Show
As a part of celebrating America’s 250 birthday, the Montana Constitution Roadshow, presented by Upper Seven Law, invites you to explore the fascinating story behind Montana’s foundational document. Ratified in 1972, this Constitution was created by Montanans, for Montanans, to reflect the values, priorities, and hopes of our state’s people.
The Roadshow is an engaging and informative presentation that offers a set of narratives to help people understand:
1) What a constitutional democracy is
2) The rule of law
3) The ways in which the Montana Constitution is special and distinct
Rylee Sommers-Flanagan is a fifth generation Montanan who grew up in Missoula and spent summers on the family’s working ranch in Absarokee. A graduate of Stanford Law School, Sommers-Flanagan served as president of the Stanford student chapter of the American Constitution Society. She graduated magna cum laude from Emory University. She also holds a creative writing degree from the University of St. Andrews.
Date: July 15, 2026
Time: 1:00 AM
Location: 618 Helena Ave.
June 2026 Newsletter
In Montana and across the United States from the Revolutionary War until today will be presented on Tuesday evening, June 9th at 7 p.m. at your History Center - 618 Helena Avenue in the Steamboat Block. This interactive program about voting rights in this country for men and women is part of the celebration of our 250th Anniversary as a nation.
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About Lewis and Clark County
The area that became Lewis & Clark County was created within Montana Territory in 1864. Originally titled Edgerton County after Montana’s first territorial governor, the jurisdiction was renamed in 1868 for the Lewis & Clark expedition which traversed it twice, once in 1805 and again in 1806.
In 1872 its boundaries were redefined, taking on, for the most part, its existing appearance. Covering over 3,000 square miles, it occupies sections of such famous land forms & features as the Rocky Mountain Front, the Continental Divide, the Big Belt Mountains, the Over-thrust Region and the Missouri River.
Rich in resources and scenic beauty, the County has attracted the attention of people from the earliest known times of North American human occupation to the present.
Learn moreExhibits
More exhibitsA significant part of our mission is dedicated to illustrating our history through both in-house and traveling exhibits.
Garments of an Era
Garments of an Era is our newest exhibit. Showing vintage clothing from a Helena family that dates back to 1880, these garments are amazing.
Communications Exhibit
Communications Exhibit features a large collection curated by East Helena’s John Barrows.
Transportation
All western Montana trails led to the Helena area, including several Native American trails and three major wagon routes.
Communities
We are a community of historic organizations and invite you to visit other local historical societies and museums located throughout Lewis and Clark County and the surrounding areas.
The Lewis & Clark County Community has a rich and diverse history. A travel stop on the Missouri River for centuries, our diverse community’s economy includes mining, ranching, manufacturing, logging, government (Helena is the state capitol), farming, transportation, military and recreation. While Helena is the largest city in the county, a number of other communities are spread across the county.
Find communities
Research
Our research center and archives features work stations with free computer and printer use and complete internet access for researchers. You can digitally access the historic newspapers that served the communities in Lewis & Clark County during the past 150 years.
Our archives contain a variety of historical documents and records that are invaluable for research and preserving the heritage of Lewis & Clark County.
Stop in the History Center to view our research resources or contact us to learn more about how we can assist with your historical inquiries.
Start your research
Membership
Join the Lewis & Clark County Historical Society to support local history and enjoy year-round benefits at the History Center and beyond.
Become a member
Volunteer
The Lewis & Clark County Historical Society is historically an all-volunteer organization. You can volunteer on your own time and schedule, and contribute in a variety of ways.
Get involved