Arboriculture
- ISA On-Line
- Utility Arborist Association
- Professional Vegetation Managers Association
- Ontario Vegetation Management Association
- IVMA of BC
- Southwest Vegetation Management Association
Electrical Utility Related
- Electric Power Research Institute
- EnergyOnline Home Page
- Energy Central – The Electric Power Information Service
- Research Reports International
- The Utility Connection
- Western Energy Institute
- Public Utility Home Page
- NARUC Home Page
- Transmission Vegetation Management
Environment, Global Warming, Greenhouse Gas Issues