In 1979 Arizona asked AASHTO to extend the US 93 designation to Phoenix; following is the route description from the actual meeting minutes:
Vintage highway sign photos
In 2009 my father and my uncle found these photos -- taken by my paternal grandfather during the 1950s -- and gave them to me, knowing I would appreciate them. That was about 20 years after I had begun taking road sign photos of my own, and until then I had the mistaken notion that I was the first in my family to have this strange hobby. Is it possible that this sort of thing can be passed down through bloodlines?