- NACD Pollinator Field Day Guide
- Nanjemoy Creek Environmental Education Center
- University of Maryland Extension
- Conservancy for Charles County
- Southern Maryland Audubon Society
- The Chapman Forest Foundation
- Patuxent Tidewater Land Trust (PTLT)
- Maryland Association for Environmental and Outdoor Education
- Dept. of Natural Resources – Wildlife Education
- Web Soil Survey
- Master Gardeners
- American Chestnut Foundation
- Backyard Conservation