Weingroff، Richard F. (7 أبريل 2011). "The Lincoln Highway".fhwa.dot.gov.Federal Highway Administration. مؤرشف من الأصل في .اطلع عليه بتاريخ . The LHA also sponsored short concrete "Seedling Mile" object lesson roads in many locations (the first, built in the fall of 1914, was just west of Malta, Illinois).