Have you ever wanted to learn more about the Permian Reef Complex of the Guadalupe Mountains? Probably not, but Dr. Peter A. Scholle, the Director and State Geologist of the New Mexico Bureau of Mines & Mineral Resources of New Mexico Tech has provided a complete virtual field trip for those who would. Visitors can read and view pictures of the area, the structural history of the mountains, the...

Whether real or virtual, Texas has a great deal of landscape. The people at the library at the University of Texas at Austin know this quite well, and they have put together this delightful online archive of public domain documents that deal with various landscapes throughout the state. As the introductory essay on the site notes, "This suite of public domain documents was selected as a foundation...