'Arizona Transportation History' report by ADOT

[Kniwt]

http://wwwa.azdot.gov/historyreport/

Prepared in December 2011, 179-page PDF. From the abstract:

The Arizona transportation history project was conceived in anticipation of Arizona's centennial, which will be
celebrated in 2012. Following approval of the Arizona Centennial Plan in 2007, the Arizona Department of
Transportation (ADOT) recognized that the centennial celebration would present an opportunity to inform
Arizonans of the crucial role that transportation has played in the growth and development of the state.
The report consists of a historical narrative and a series of topical essays. The seven-chapter historical narrative
is a history of Arizona's highways that extends from the pre-Columbian era to the present.

The 14 topical essays extend the scope of the history beyond the state's highway system. They include
overviews of the development of other transportation modes (railroads, aviation, and urban transit), a brief
history of highway pavements, a lighthearted look at the motoring experience during the 1920s and 1930s, and
an exploration of how changes in transportation infrastructure affected some Arizona communities. The topical
essays also provide additional historical information on bridges, urban freeways, the Interstate system, ADOT
and its predecessor agencies, and famous roads such as U.S. Route 66, U.S. Route 89, the Black Canyon
Highway, and the Beeline Highway.

No photos that I found during a quick scan, but a few drawings.

This report was referenced today by The Arizona Republic in a story about US 60 routing:
http://www.azcentral.com/insiders/askedandanswered/2014/02/06/why-does-u-s-60-appear-in-different-places-around-valley/