Travel Route 66 (U.S. National Park Service)

2. Before 1926: The Origins of Route 66 (U.S. National Park Service)

A comprehensive guide to the country's 63 national parks - Washington Post

The Ultimate Route 66 Road Trip Guide - The Planet D

Learn About Route 66 - National Trails Office - Regions 6, 7, 8 (U.S. National Park Service)

Ultimate Route 66 Road Trip Planning Guide - Independent Travel Cats

Route 66 Wednesdays; Petrified Forest National Park

The Ultimate Route 66 Road Trip Guide

Route 66: National (U.S. National Park Service)

1. Route 66 Overview (U.S. National Park Service)

Five National Parks You Must See When Driving Route 66 - Greetings From Kelly

Travel Route 66 (U.S. National Park Service)

Find Your Park on Route 66 (U.S. National Park Service)

Route 66: Project to Show Native American Link to Iconic Highway

Ultimate Route 66 Road Trip Planning Guide - Independent Travel Cats