I've started doing a lot of bread baking and am looking for a source for 25 or 50 lb. bags of unbleached flour. Ideally, I'd like it to be a locally milled flour. And I'm not interested in the bags you can get at Costco or similar. Does anyone know of a local mill that sells to the public? Given the weight I'm looking for, I don't want to add shipping charges on to an online order. Thanks!