Our objectives are threefold. First, Socface will develop new methods to extract individual-level data from a very large set of archival document images, taking advantage of the inherent structure of the original document, and with auto-evaluation of the quality of the process. Second, the project will be the first in France to link records from the same individuals over time on a large scale, opening unprecedented opportunities for research, both during the project and afterwards. Third, using the new data, Socface will investigate social change at the local level for France as a whole to propose a detailed morphology of the evolution of labor markets in France throughout industrialization.