When the Wright brothers made their first flight in 1903, Phoenix had a population of 5,544, finally larger than Prescott but still smaller than Tucson. Construction of Theodore Roosevelt Dam began the same year.
"Aeroplanes" — and even before that balloons — give us a great vantage point to track the city's growth. Most of these photos are collected by Brad Hall. Click for a larger image:
A balloon view over Second Street and Adams in 1911.
The same year an airplane captured this shot at Washington and Second Street. Block 23 is in the near lower right. A few blocks west is another block of shade trees — that's the county courthouse. The multi-story structure with raised awnings in the mid-upper-right is the Fleming Building.
The State Fairgrounds seen from a balloon in 1912, when Arizona was admitted to the union.
Here's the town in 1915, with a view looking south. Central Avenue is the street that goes all the way across the Salt River.