The principles that have guided the development of NINES, an online finding aid for the nineteenth century, are now being extended into the eighteenth century through a collaboration between Miami University, I-CHASS, and the University of Illinois. 18thConnect will provide the first comprehensive means of organizing on-line materials before 1800. Eighteenth-century historians, literary scholars, and philosophers face a major problem: the archive of most, but not all, books published in England between 1700 and 1800 have been digitized by a for-profit group. The search engine deployed by this company for its image-only texts threatens to limit, by its deficits and omissions resulting from machine error, our capacity to understand Enlightenment thought, the development of modern science, history painting, the rise of the novel, the foundations of modern psychology, and other important topics. The developers of 18thConnect are working closely with the NINES project at the University of Virginia to develop software that searches and organizes early printed books in a more accessible format.