The U.S. National Archives is home to billions of records that date back to the late-eighteenth century. Thanks to Today's Document, visitors can explore selected items from this collection with ease. Each day, the National Archives posts a single document that was created on that day in history. For instance, on February 9, 2018, the National Archives featured a letter authored by Enrique Dupuy de Lome, the Spanish ambassador to the United States, on the eve of the Spanish-American War. As an accompanying caption explains: "Cuban revolutionaries intercepted the letter from the mail and released it to the Hearst press, which published it on February 9, 1898, in the New York Journal." Meanwhile, on February 6, 2018, the archive featured the military treaty that outlined the alliance between colonial America and France signed on February 6, 1778. Social studies instructors interested in incorporating these documents into the classroom will want to check out the educator resources tab, which features links to resources developed by the National Archives to help young historians engage with primary documents.