Dairy Barn was a chain of regional convenience stores located on Long Island, New York, with headquarters in Elwood, New York. The stores were distinguished by their drive-through feature, red barn appearance, and little red silo.
In 1939 Edgar Cosman, a Swiss textile manufacturer with business interests in the United States, purchased a dairy farm on Long Island. In 1961 Cosman's son, Dieter Cosman, expanded the dairy's wholesale milk business into a chain of retail, drive-through convenience stores named "Dairy Barn."
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