Explore the surprising history of North Carolina food through the primary documents here, in The Archive. You'll find everything from horseradish Jell-O recipes to a silent film about the newfangled refrigerators of the 1910s. The documents, photographs, and films in The Archive are called primary sources because they offer evidence of what people in the past were thinking, saying, and doing. When a historian or person like you interprets primary sources, their interpretation is called a secondary source. Archives are traditionally places that hold historic materials with enduring value. Archives can be located inside libraries and historical societies, or they may operate indendently. Sometimes, they can be online.