| January 8, 1904 | Wilbur Wright to Octave Chanute |
| January 14, 1904 | Octave Chanute to Wilbur Wright |
| January 18, 1904 | Wilbur Wright to Octave Chanute |
| January 20, 1904 | Octave Chanute to Wilbur Wright |
| January
26, 1904 |
Octave Chanute to Wilbur Wright |
| January 26, 1904 | Octave Chanute to Wilbur Wright |
| February
13, 1904 |
Wilbur Wright to Octave Chanute |
| February
15, 1904 |
Octave Chanute to Wilbur Wright |
| March 1, 1904 | Wilbur Wright to Octave Chanute |
| March
3, 1904 |
Octave Chanute to Wilbur Wright |
| March 14, 1904 | Wilbur Wright to Octave Chanute |
| March
19, 1904 |
Octave Chanute to Wilbur Wright |
| March 29, 1904 | Wilbur Wright to Octave Chanute |
| March 30, 1904 | Octave Chanute to Wilbur Wright |
| April
9, 1904 |
Octave Chanute to Wilbur Wright |
| April 10, 1904 | Wilbur Wright to Octave Chanute |
| April
14, 1904 |
Wilbur Wright to Octave Chanute |
| April
15, 1904 |
Octave Chanute to Wilbur Wright |
| April
17, 1904 |
Octave Chanute to Wilbur Wright |
| April 24, 1904 | Wilbur Wright to Octave Chanute |
| April
27, 1904 |
Octave Chanute to Wilbur Wright |
| May 5, 1904 | Wilbur Wright to Octave Chanute |
| May
7, 1904 |
Octave Chanute to Wilbur Wright |
| May 15, 1904 | Wilbur Wright to Octave Chanute |
| May
16, 1904 |
Octave Chanute to Wilbur Wright |
| May
20, 1904 |
Wilbur Wright to Octave Chanute |
| May 26, 1904 | Octave Chanute to Wilbur Wright |
| May 27, 1904 | Wilbur Wright to Octave Chanute |
| May 28, 1904. | Octave Chanute to Wilbur Wright |
| May
30, 1904 |
Octave Chanute to Wilbur Wright |
| June 5, 1904 | Octave Chanute to Wilbur Wright |
| June
8, 1904 |
Octave Chanute to Wilbur Wright |
| June
14, 1904 |
Wilbur Wright to Octave Chanute |
| June 17, 1904 | Octave Chanute to Wilbur Wright |
| June
21, 1904 |
Wilbur Wright to Octave Chanute |
| June
25, 1904 |
Octave Chanute to Wilbur Wright |
| July
1, 1904 |
Wilbur Wright to Octave Chanute |
| July 4, 1904 | Octave Chanute to Wilbur Wright |
| July
17, 1904 |
Wilbur Wright to Octave Chanute |
| July
31, 1904 |
Octave Chanute to Wilbur Wright |
| August
8, 1904 |
Wilbur Wright to Octave Chanute |
| August
14, 1904 |
Octave Chanute to Wilbur Wright |
| August 28, 1904 | Wilbur Wright to Octave Chanute |
| September 5, 1904 | Octave Chanute to Wilbur Wright |
| September 18, 1904 | Wilbur Wright to Octave Chanute |
| September
30, 1904 |
Octave Chanute to Wilbur Wright |
| October
5, 1904 |
Wilbur Wright to Octave Chanute |
| October
12, 1904 |
Octave Chanute to Wilbur Wright |
| November
15, 1904 |
Wilbur Wright to Octave Chanute |
| November
19, 1904 |
Octave Chanute to Wilbur Wright |
| December
20, 1904 |
Wilbur Wright to Octave Chanute |
| December 26, 1904 | Octave Chanute to Wilbur Wright |
On to the year 1905