Montana Historical Society

Big Sky. Big Land. Big History.

Business Entity Research Requests

Important Records are accessed using an ID number. You can obtain the ID number from the Montana Secretary of State's Business Search database. To access this database, visit the SOS Online Business Filings page and follow the link for Search for a Business, under Get Started. From your search, locate the ID number, for example, F000886, and include it with your request. Note: Our collection includes records only for inactive businesses.

When will I get the results? Research requests are handled in the order they are received. Turnaround time is approximately 4 weeks from receipt of payment.

Can I publish the results of the research?  If you would like to publish a reproduction of an item in our collections, please see Copies and Reproductions.

If you have questions about research requests, please contact us at 406-444-2681 or email

Submit a Request

Research requests may be submitted online or by mail.

Submit a request online

Send a request by mail (PDF)


Fax and telephone requests will not be accepted.