The Iowa Geological Survey maintains a catalog that lists available and out-of-print publications that provide information on the geological resources of Iowa, including the state’s groundwater, bedrock, glacial materials, and mineral resources.
The out-of-print/loan publications are no longer available for purchase. Loan copies for most of these publications may be obtained, however, on request from the Iowa Geological Survey for a 30-day period. Photocopying is permitted. Out-of-print publications may be accessed at university libraries and some public libraries.