Another great New Hampshire shop that I forgot to mention is Pickering Farm in Richmond, NH
http://www.pickeringfarmquiltshop.com/index.html
They specialize in reproduction fabrics, 1700's through 1930's, and are in a restored 1790's barn. Diana Gallagher is the owner and is wonderfully helpful. It's over an hours drive from me so I often call first if I am looking for a particular fabric. She knows immediately if she has it or can suggest alternatives if I'm interested. I get down there once or twice a year and they have a booth at most of the quilt shows in the region. Everyone on the staff is welcoming and very friendly without being cling-ey. It's like a trip back in time, though it is a bit "out of the way". They also have a beautiful selection of hand-dyed wool meant for rug hooking, but great for quilts, too.