| ||American Society of Consulting Arborists|
| ||Consulting arborists are called upon to advise in the most challenging situations that necessitate experience in the science and practice of arboriculture, as well as specific expertise in the practical, ethical and objective role of consultant.|
| ||International Society of Arboriculture|
| ||The International Society of Arboriculture is a worldwide professional organization dedicated to fostering a greater appreciation for trees and to promoting research, technology, and the professional practice of arboriculture.|
| ||National Arbor Day Foundation|
| ||The official site of the National Arbor Day Foundation provides information about planting and caring for trees, our Rain Forest Rescue and Tree City USA programs, and much more. Buy trees and give a gift of trees through our Trees in Memory and Trees for America programs.|
| ||Society of Municipal Arborists|
| ||Founded in 1964, the SMA is an organization of municipal arborists and urban foresters. Our membership also includes consultants, commercial firms and citizens who actively practice or support some facet of municipal forestry.|
| ||American Forestry|
| ||American Forests works to protect, restore and enhance the natural capital of trees and forests. Healthy forests filter water, remove air pollution, sequester carbon, and provide homes for wildlife. Help plant trees to restore areas damaged by wildfire, where critical wildlife habitat has been lost, and to clean our air and water.
| ||New York State Department of Environmental Conservation|
| ||The New York State Department of Environmental Conservation exists to:"conserve, improve, and protect New York State's natural resources and environment, and control water, land and air pollution, in order to enhance the health, safety and welfare of the people of the state and their overall economic and social well being."
| ||United States Forest Service Northeast Area|
| ||Northeastern Area, State and Private Forestry, USDA Forest Service has a goal to providethe public and partners with timely, accurate, understandable information about the sustainable management and stewardship, status and condition, and value of forest lands.|