GALLICA, presented to the world by the Bibliothèque Nationale (Paris), the national library of France, represents one of the premier resources for primary printed texts for scholars, teachers, and students. Many of its holdings, which can be downloaded free of charge, represent the Early Modern period, including the Scientific Revolution (Copernicus to Newton). What follows is a detailed introduction and overview of some of the holdings of GALLICA. For the convenience of the reader, the titles of available printed works (most in PDF format) have been arranged by topic. Some of the categories are, or will appear, anachronistic. Nevertheless, these listings are intended to provide a clearer idea of the holdings of GALLICA and to guide potential users to specific texts available at the site. Again please note that GALLICA is accessible to all users free of charge. RAH