Cornell's University Archives holds the documents produced by thirteen years (1952-1965) of collaboration between North American social scientists and some 360 peasant households in the northern Peruvian highlands. This page covers four documentary sets: scanned images of paper files that illuminate critical variables of cultural change in the region; some 2,000 images, selected from a much larger cache of analog prints and negatives; the guide to collection, held in the Division of Rare and Manuscript Collections; and an associated website, Vicos: a Virtual Tour.