This report presents the available experimental data on four thermophysical properties of twelve rock types and also gives selected values for fifteen specific rock materials identified by geologic formation or geographic location. Sufficient specimen characterization and measurement information are provided to permit meaningful data evaluation and correlation. In addition, petrographic description of the individual rock types and the specific rock material are also included. The fifteen specific rock materials constitute the ARPA and NASA suites of rocks, and the four thermophysical properties are thermal conductivity, thermal diffusivity, thermal linear expansion, and specific heat. The property data are extracted from 95 data source references covering the publication years from 1920 to 1972 and are presented in both graphical and tabular formats usually as a function fo temperature. In some cases, however, data as a function of pressure or saturation are also given. (Author)