Abigail's Bakery also has an online store for those far away.
http://www.abigailsbakery.com/
Also from their website:
"Join us Saturdays at Cole's Garden Market from 10am- 2pm, or the Tilton Winter Farmers' Market from 10am-2pm. We always have a wide variety of our breads available, and many options not found in the supermarkets."
Cole's Garden Market is in Concord, according to Google.
Haven't found a list of other retailers where they are located.