Vintage Wool Flannel Plaid Overshirt, Button front 100% worsted wool. Excellent condition. The Minnesota Woolen Co. was founded in Duluth USA in 1916. The company sold clothing throughout the United States direct-to-consumer and operated retail stores, the last Minnesota Woolen Co retail store closed in 1976. This wool overshirt is high quality, absolutely stunning vintage wool flannel. The shirt features two flap/button chest pockets, button sleeve cuffs, straight hemline. A unique piece of clothing history, for the dedicated collector.