Welcome to the ACGS website  — Our 42nd Year!

Founded in Manchester, New Hampshire in 1973, the Society is here to serve your genealogical research needs.

  • Become an ACGS Member and take advantage of our membership benefits.
  • Browse our Catalog for a listing of the many publications that may be purchased to help you with your ancestral research.
  • Visit our message board to introduce yourself and post queries about those elusive ancestors.


Catherine Baillon

In 1999, we were fortunate in having the opportunity to publish an excellent article on the well researched line of Catherine Baillon:  René Jetté, John P. DuLong, Roland-Yves Gagné, and Gail F. Moreau. “From  Catherine Baillon to Charlemagne.” American-Canadian Genealogist 25:4 (Fall  1999): 170-200.

Through the generosity of the surviving authors we have obtained permission to make this article available on our website. To read or download this article, simply click on this link. Our appreciation to John P. Dulong for making this possible.

For more information about the Catherine Baillon research project, visit http://habitant.org/baillon/.

Our Building Has Undergone Repairs!

We have embarked upon a substantial effort to repair the outside of our library building.  The major work done is replacing damaged/cracked bricks, re-pointing, cleaning and sealing the exterior of the building.


We have incurred an expense of $100,000 in doing these necessary repairs.

Please help us in our efforts to preserve this facility for future generations by contributing to our fundraising efforts in any way possible. This  may be by honoring a loved-one on our Tree of Life or by a monetary contribution to the Society.

Other major fundraising efforts will be announced.

Thank you for your continued  support.


Getting Started
Just starting your research?  We have suggestions, tools and more to help you out! Click here to learn more.

Contact Us
To learn more about the ACGS and how we can help you and your genealogy research, visit us at 4 Elm Street, next to the Blessed Sacrament Church in Manchester, New Hampshire, one block south of Queen City Avenue.

You can also email us at acgs@acgs.org. Our mailing address and telephone number are available on our contact page.