1. Map of the National Old Trails Road : open 365 days in the year thru the heart of America, play ground of America, the backbone of a system of national highways showing every city, town, village, and hamlet throughout its entire length, proposed by the National Old Trails Road Association, and also advocated by the National Highways Association Maps University Of Minnesota Public content 1923. Mulford, John C. Shows cities and towns along the road.; Includes text, charts, and profile view indicating distance and elevation. 28 x 126 centimeters, on sheet 3... National Old Trails Road Association (Washington, D.C), 1923.