Eighteenth Century Collections Online (ECCO) This link opens in a new windowAlternate title: ECCO (Eighteenth Century Collections Online). Gale's Eighteenth Century Collections Online (ECCO) is based on the English Short Title Catalog (ESTC), and contains English-language and foreign-language titles published in the United Kingdom between 1701 and 1800, along with thousands of important works from the Americas. 150,000 printed works (some 33 million pages) covering the American Revolution, the French Revolution, and the Industrial Revolution. Full-text searchable, ECCO enables library patrons to search for books and broadsides, Bibles, tracts and sermons, printed ephemera, and studies in every academic discipline: History and Geography, Social Science and Fine Arts, Medicine, Science and Technology, Literature and Language, Religion and Philosophy, and Law.