Bicycle Touring & More. Other outdoor activity

Is there a way to improve the detailed maps of the passage to the Pacific Coast charted by Lewis & Clark's Corps of Discovery more than two centuries ago?

The Adventure Cycling Association says there is. Five years after printing the first set of Lewis & Clark Trail maps for bicycles, the bike touring organization has reprinted the maps with improvements. The updates include:

-- More cycling-friendly routing in places, including off-road bike paths and freshly paved rural roads;
-- More accurate elevation profiles;
-- Added alternative gravel routes;
-- Updates to route services, which now include libraries ...