An agreement between ProQuest and Gale, a part of Cengage Learning, is intended to connect the two digital research databases of early modern English books, used at more than 200 universities worldwide, through cross-search technology. In 2008, a search in ProQuest's Early English Books Online (EEBO) also will provide bibliographic search results from Gale's Eighteenth Century Collections Online (ECCO) for mutual subscribers, and vice versa. EEBO and ECCO are digital collections of nearly every printed work from the late 15th through the 18th centuries. The agreement is meant to streamline research in literature, humanities, history, and a variety of cultural studies. Libraries that have purchased both EEBO and ECCO can activate cross-searching at no charge. Once activated, the cross-search technology requires only a single search to access and view more than four centuries' worth of relevant documents in their original form on a desktop.