| March 9, 1909 | Octave Chanute to Wilbur Wright |
| May
17, 1909 |
Wilbur Wright to Octave Chanute |
| May
19, 1909 |
Octave Chanute to Wilbur Wright |
| June
6, 1909 |
Wilbur Wright to Octave Chanute |
| June
16, 1909 |
Octave Chanute to Wilbur Wright |
| December 6, 1909 | Wilbur Wright to Octave Chanute |
| December
23, 1909 |
Octave Chanute to Wilbur Wright |
On to the year 1910