1280px-Adelges_tsugae_3225077-2 November 17, 2014 Hemlock Woolly adelgid: NPS Related Posts:National Parks Set Visitation and Economic Impact…Food for Thought: Political-Religious Strife from…Government Shutdown Will Close America’s National…Ranger Program: Welcome to WashingtonNational Park Service Announces Free Days for 2024Travel - Something to See in Washington, D.C.:…