RICHMOND, Va. (AP) _ From Thomas Jefferson’s Monticello in Virginia to Pennsylvania’s Gettysburg, an ambitious memorial is slowly sinking roots: the planting of 620,000 trees representing the Civil War’s human toll. With only about 2,000 trees in the ground, the goal of the nonprofit Living Legacy Project will likely extend well beyond the Civil War’s Sesquicentennial, which concludes this year. The project is undaunted, with 8,000 plantings already scheduled in 2015. Organizers are looking ahead to another milestone for completion of the $65 million memorial _ the war’s bicentennial. The project is part of the Journey Through Hallowed Ground Partnership, a national heritage tourism nonprofit that aims to highlight the rich American history along the 180-mile route through Pennsylvania, Maryland, West Virginia and Virginia.