I live in Portland so we have a Whole Foods here, but I've been getting "cabin fever" and decided to go out driving the last few days as the weather her in Maine has turned unseasonably warm. I found two great small natural food stores with a host of vegetarian and Vegan items.
Morning Glory in Brunswick, MaineBath Natural Market
in Bath, Maine
I was really impressed with Morning Glory. They had just about everything a Vegan could ask for at prices in some cases better than what I would pay for the same or similar items at Whole Foods.