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Route 66 – Wikipedia
Route 66 | History, Map, Popular Culture, & Facts | Britannica
U.S. Route 66 - Wikipedia
Die Geschichte der Route 66
Route 66: The Iconic Highway's Rise and Decline - HISTORY
1. Route 66 Overview - U.S. National Park Service
Route 66 - U.S. National Park Service
Route 66 History - National Historic Route 66 Federation
Route 66: National - U.S. National Park Service
The History of Route 66 - Oxford Research Encyclopedias