BTW, it's in the town of Garrett Park, set up weekly in the parking lot in front of the "Black Market" restaurant, which is in the same building as the town post office (open 'til 12 on Saturday), and adjacent to the train stop.
Very convenient that they all seem to take credit cards, which makes it easier for me to buy new and unfamiliar things. -- Do come out and support this new location and the hardworking businesses that bring us all this variety. Plenty of parking, and close to the White Flint Metro stop. Saturdays