1. Fifty thousand miles of national highways proposed by the National Highways Association, Washington, D.C : with the alignment of the Lincoln Highway (tentative location - subject to revision) showing every city, town, village, and hamlet throughout its entire length Maps University Of Minnesota Public content 1915. Mulford, John C. The Lincoln Highway is not a part of the 50,000-mile system advocated by and shown on the maps of the National Highways Association. Much of the mi... Lincoln Highway Association (Washington, D.C).