Prepared by the Case Histories Committee for the Engineering Geology Division of the Geological Society of America, these histories are intended as reference material for the practicing geologist and for the college student. The fifth volume, edited by George A. Kiersch, contains the following papers: Landslide of Cerro Condo-Sencca, Department of Ayacucho, Peru; Removal of ripple rocks, Seymour Narrows, British Columbia, Canada; Earth dams in glacial terrain, Catskill Mountain region, New York; Geologic investigations for sources of large rubble; Relief wells on the Garrison Dam and Snake Creek embankment, North Dakota; Lithology and hydrology of radioactive waste-disposal sites, Savannah River Plant, South Carolina; Engineering geology of the Demirkopru Dam site, Salihli, Turkey.