When I first came to Prescott I found a road named "White Spar." Having been connected with boats and ships slightly by being a Sea Scout when I was growing up, I assumed it was associated with spars in a ship. Such is not the case. Here is a photo of a white spar.
Prescott was founded as a mining town and we had our own gold rush following the conclusion of the Civil War. A prospector spotting a white spar would immediately work the area as the quartz outcropping is oftentimes a sign of the possibility of gold being nearby.
This photo was taken in the Prescott National Forest south of Prescott.
Here is another white spar. This photo was taken in the Morgan Ranch area north of Prescott and west of Chino Valley.