In November my neighbor, a retirement home, hired a local landscaper to limb my spruce that is at the property line. The tree is about 70 feet tall and the limbing goes up about 50 feet. I have had an arborist do a risk assessment and his finding were that the tree should be removed as it is at risk of falling into the homes around it. Hower the cities arborist claim that no injury was caused to the tree. I have been trying to find information to present in this matter. Where can I find articles or tree education to present to those that work at city hall that don't have experience in arboriculture.