- Missouri Association of Soil and Water Conservation Districts
- Soil and Water Conservation Program
- Missouri Department of Natural Resources (DNR)
- National Association of Conservation Districts
- Missouri Department of Conservation
- Natural Resources Conservation Service (NRCS)
- United States Department of Agriculture (USDA)
- Farm Service Agency (FSA)
- University of Missouri Extension
- University of Missouri Extension-Linn County
- University of Missouri Extension-Custom Rates
- University of Missouri Extension-Soil and Plant Testing
- University of Missouri-CARES
- NRCS- Web Soil Survey
- NRCS-Plant Database