Butterflies of Jefferson County
- Presents photos and species accounts of butterflies found within the county.
- http://www.butterfliesandmoths.org/map?dc=188&_dcc=1&si=36

Jefferson County Environmental Data
- Index to program areas, educational information, newsletters and events available through Ohio State University Extension.
- http://jefferson.osu.edu/

Jefferson Soil and Water Conservation District
- Serves the residents of the county by promoting and demonstrating conservation of soil and water through education, technical assistance, financial support and public information.
- http://www.jeffersonswcd.org/