Cenozoic Geology of Idaho provides abundant information, including much that was previously unpublished, about the last 65 m.y. of the earth's history in this interesting state. The softbound volume consists of 41 individually authored papers organized by topic into 14 chapters. Volcanic stratigraphy and structures have received the most attention, but Tertiary basin sediments and Quaternary glacial deposits are each the subject of several papers. Geophysical data is seldom mentioned, except for a fine summary of the geophysics and tectonics of the Snake River Plain by D. R. Mabey (Utah Geological and Mineral Survey, Salt Lake City). Unfortunately absent, especially for those unfamiliar with the region, is any overview summary (or even a regional location map) to provide a framework within which the individual detailed papers can be integrated.