California Highways (www.cahighways.org): Route 99
Old U.S. 99 symbol from 1960s revealed when part of 5 Freeway falls - Los Angeles Times
Historic Highway 99 Association of California - Dedicated to the preservation of California's Main Street - former US Highway 99
Signs recall days when old Highway 99 was a busy route
U.S. Route 99 - Wikipedia
State Route 99 tunnel in Seattle seeing significant drop in revenue | king5.com
Route 99 Brasil - YouTube
Route 99 in Salem - Restaurant menu and reviews
Route 99 and Historic U.S. 99 - AARoads - Oregon
A Pictorial History of Highway 99: The Scenic Route—Redding, California to Portland, Oregon: Steele, Carole MacRobert: 9781643884363: Amazon.com: Books