Ancestry Library Edition
This database is only accessible from computers in the library.
It is the largest collection of family history records on the web. Learn details about your ancestors' lives. Build your family tree.

Cyndi's List
Find free online genealogical resources by topic, location, religion, ethnicity, occupation, records and more in this cross-referenced portal for family research on the Internet.

FamilySearch
A service provided by The Church of Jesus Christ of Latter-day Saints. "Our vision is...to preserve and share the largest collection of genealogical and historical records in the world. We strive to create and link the best and most valuable research resources to help people discover who they are by exploring where they come from. For over 100 years, FamilySearch and its predecessors have been actively gathering, preserving, and sharing genealogical records worldwide."

Heritage Quest
Access Heritage Quest from outside the library (requires your library card number and password)
HeritageQuest Online has a unique, growing collection of research materials for tracing family history and American culture. Beginning or professional genealogists can now use this powerful online library.

Lewis & Clark County Genealogical Society
The Lewis & Clark County Genealogical Society maintains a genealogy collection of books and periodicals with primary emphasis on Montana cities and counties including valuable sources related to Lewis & Clark County. 

Montana Genealogical Society
Access the Montana Genealogical Society