The collection consists of project files and research files compiled by J. W. Johnson during his career as Professor of Hydraulic Engineering and as a professional consulting engineer.

The collection consists of the papers of Thomas C. Patterson, a Distinguished Professor Emeritus in the UC Riverside Department of Anthropology. Materials in the collection include field notebooks and other materials related to Patterson's archaeological and ethnohistorical research on Peru.

This collection contains publications and other material regarding Latin America and Peru collected by Hobart A. Spalding, a professor of history from Brooklyn College and the CUNY Graduate Center. According to Spalding, this collection provides “a snapshot of academic and political writing in Peru during the late 1980s [through the 1990s], as well as related material published in the U.S.”