Contribute to the Lyle Sittler Memorial Fund to support the Leopold Conservation Award in Nebraska. Donate today! Nebraska Partners Nebraska Platinum Sponsors Nebraska Gold Sponsors Nebraska Silver Sponsors Audubon Great Plains Green Cover Seed Lyle Sittler Memorial Fund Nebraska Department of Agriculture Nebraska Game and Parks Nebraska Land Trust Rainwater Basin Joint Venture Sandhills Task Force U.S. Fish & Wildlife Service (NE) World Wildlife Fund - Northern Great Plains