Northern Illinois University, Department of Geology and Environmental Geosciences Davis Hall 312, Normal Rd., DeKalb, IL 60115 United States
National Science Foundation, Division of Undergraduate Education, Room 835 4201 Wilson Boulevard, Arlington, VA 22230 United States ; University of South Florida, Department of Geology 4202 East Fowler Ave., SCA 528, Tampa, FL 33620 United States
Northern Illinois University, Department of Geology and Environmental Geosciences Davis Hall 312, Normal Rd., DeKalb, IL 60115 United States