The Boulder Genealogical Society is here to help you with your family history no matter where you are researching. We also contribute to the greater genealogical community through local history research.

Society meetings are free and open to the public
on the first Tuesday of each month at 7:00 pm
at Frasier
350 Ponca Place, Boulder

We meet in the 4th floor Assembly Room. To reach this room, enter through the Ponca Place lobby and sign in at the table. Take the elevator at the back of the lobby up to the 4th floor. Upon exiting the elevator, turn left (south). The Assembly Room will be on your left.

Note: Frasier is in the midst of a major building project and your usual parking place may not be available. Plan to arrive early to find a spot. Consider carpooling.

“Switzerland Trail of America – Narrow Gauge Railroading in the Mountains of Boulder County,” By Larry Dorsey
Aug 4 @ 7:00 pm – 8:30 pm


The program describes the railroad nicknamed “The Switzerland Trail” serving the mining towns of Boulder County from the 1880’s to 1919 when it was abandoned. Photos of early railroading in Boulder and scenes in the mining camps of old Boulder County are included. 


Larry Dorsey is a retired history teacher from the Boulder Valley District having taught at Fairview, Boulder and Centaurus High Schools. He is a Trustee of the Colorado Railroad Museum, Golden, Colorado and the Chair of the Superior Historical Commission. He and his wife, Cheryl, are Boulder County residents since 1967.

“The Basics of the Use of DNA in Genealogy…What DNA Can Tell You and What It Can NOT Tell You” by Dorothy Coltrin @ Your Home via Zoom
Aug 13 @ 1:00 pm – 3:00 pm

The topics for this presentation will include 1) Purpose of a DNA Test, 2) Chemistry and Biology of DNA, 3) Use of Y-chromosome for your surname, 4) Use of autosomal (at) for connections to cousins, 5) Use of mitochondrial (mt) DNA for connection to your mother’s line, 6) Description of various companies offering DNA analysis,  7) Use of third party GED Match, 8) Importance of paper research.  I will give examples from my own DNA work and there will be plenty of time for questions.

To register for the class and receive the Zoom link, please send an email to

“Lineage Societies – What, Why and How” By: Sandy Carter-Duff
Sep 1 @ 7:00 pm – 8:30 pm


Sandy will explain what lineage societies are and tell why it is important to join one.  The main emphasis of the program will be on HOW you must document your lineage i.e., what is acceptable and what is not.  Sometimes obvious documentation such as birth, death and marriage certificates are not available.  She’ll present ways to get around that problem.  Finally, she’ll share of list of lineage societies – common and rarely known – with websites to explore specific requirements and make contacts.


Sandy Carter-Duff began researching her family history in the 1970’s.  Her passion stems from her youth as an Air Force brat.  As her family moved from one station to another, she envied classmates with many extended-family in their lives.  When she learned her father was adopted, the challenge to find the heritage and story of his birth roots peaked her curiosity.  She joined the Colorado Genealogical Society about 1988 to learn family research skills; she is a past president.  She also joined the Computer Interest Group, Palatines to America, the W.I.S.E. Family History Society, NGS, NEHGS and several state societies.  DPL Genealogical Collection Specialist James Jeffrey once told her to join a lineage society if she had no plans to publish a family history as this would be the next best way to preserve her research for future generations.  She began this pursuit about 2009 and now belongs to ten lineage societies.