The item must remain in their office so it is available for others to use. Illinois Dept. of Natural Resources agencies may charge an item out for 1 month. Access is restricted to patrons affiliated with the University of Illinois at Urbana-Champaign. We have a set of CD's called PhoneDisc that contains personal and business phone numbers for the United States. We have aerial photos for Illinois from a wide range of years.
Coverage is incomplete, and use of aerial photos is restricted to in-house use.
If they fit with our collection development policy they are added to our collection. We also use them to replace missing copies. Remaining titles are offered to other geology libraries for their collections. If you prefer a different arrangement, just let us know at the time you donate the materials. Out-of print ISGS publications can be borrowed through Interlibrary Loan.