Wikipedia:WikiProject U.S. Roads/Washington/Resources

• Maps, 1893-1935
• More history
• Images from the biennial reports
• Early USGS topo maps and other early maps

• 1932 summary of early road history
• History of Roads and Highways in the State of Washington (1939)
• Forty Years with the Washington Department of Highways (1946)

• Wikipedia:WikiProject U.S. Roads/Washington/Completion list
• Wikipedia:WikiProject U.S. Roads/Washington/When each route was added to the state highway system
• Wikipedia:WikiProject U.S. Roads/Washington/List of laws
• Wikipedia:WikiProject U.S. Roads/Washington/Former routings in Seattle
• Wikipedia:WikiProject U.S. Roads/Washington/List of pre-1964 highways
• Wikipedia:WikiProject U.S. Roads/Washington/Directional signage
• Wikipedia:WikiProject U.S. Roads/Washington/Highways of Statewide Significance
• Wikipedia:WikiProject U.S. Roads/Washington/List of all state highways before 1970
• Wikipedia:WikiProject U.S. Roads/Washington/Auto trails
• Highway News index (1951 to 1972)