The Consortium for Continental Reflection Profiling (COCORP) announces the availability of data packages for two areas, the Charleston, SC area and the Central Michigan area, for the cost of reproduction. These data were obtained by COCORP who are applying sophisticated, continuous seismic reflection techniques to the solution of geologic problems of the earth's crust and upper mantle. The operation is part of the U.S. Geodynamics Project sponsored by the National Academy of Sciences and funded by the National Science Foundation. The executive committee of the consortium consists of members from Cornell University, University of Houston, Princeton University, the University of Texas at Austin, and the U.S. Geological Survey. Cornell University is the operating institution.