An updated re-release of 3 USGS publications: Vitrinite reflectance and conodont color alteration index data from Alaska: data to accompany the thermal maturity map of Alaska, USGS open-file report 92-409; Generalized thermal maturity map of Alaska, USGS miscellaneous geologic investigations map I-2494, scale 1:2,500,000; Thermal evolution of sedimentary basins in Alaska, USGS bulletin 2142.