Geology of the Late Neogene Pipe Creek Sinkhole (Grant County, Indiana) is a volume of collected papers concerning different aspects of the geology of this interesting site. Uncovered in 1996 by workers at the Pipe Creek Jr. Quarry, the Late Neogene sinkhole has yielded the first preglacial fauna from the age of mammals ever found in the interior of the eastern half of North America. The papers include: “Occurrence and features of fossiliferous sediments of the Pipe Creek Sinkhole (Late Neogene, Grant County, Indiana),” by J. O. Farlow, R. L. Richards, and others; “Interstratified kaolinite-smectite from a sediment derived from terra rossa in the Pipe Creek Sinkhole, Indiana,” by Anne Argast and J. O. Farlow; and “Course of the Tertiary Teays River southwest of Lake Erie Lowlands, USA: Evidence from petrologic and lead isotopic characteristics of pebbles found in the northern Indiana Pipe Creek Sinkhole,” by J. A. Sunderman, E. T. Rasbury, and S. R. Hemming.