I asked Google search for Route 6 highlights map and the first page that came up was this one  “Maps of US Route 6”  

Check that out as a resource for planning the Route 6 road trip this year.

The U.S. Route 6 Tourist Association is a nonprofit organization dedicated to the economic development and cultural preservation of communities along the historic U.S. Route 6, also known as the Grand Army of the Republic Highway. Established in 2001, the association operates as a 501(c)(3) public charity, making contributions tax-deductible as permitted by law.