Added missing US 89 reference to I-40.
Added I-40 Business and Historic US 66.
Added more of the ATSF to the map.
Added earlier alignments of US 66 and post-1985 Interstate 40.
Adding SR 66 and Historic Route 66
Adding SR 66 and Historic Route 66
Adding SR 66 and Historic Route 66
Adding SR 66 and Historic Route 66
Added start date to Country Club Avenue.
Added more of the ATSF to the map.
Added older alignments of US 66 between Williams and Ash Fork