Simplex said - As long as the Wright brothers preferred their planes to be shown in newspapers with a propeller underneath and kept all the alleged 1903-1905 pictures for themselves and only after Aug. 8, 1908 started to show them, those hundreds of photos have little historical value.
Simplex then said - A Wright plane with a propeller underneath:
Scrapbooks: January 1902-December 1908 | Library of Congress
How in the world did you conclude that the Wright brothers themselves "preferred" that their planes be shown in any particular fashion based on the drawing of a newspaper artist who also drew a butterfly man?
I'll leave it to others to decide whether or not the newspaper drawing above shows a propeller underneath, poorly drawn left and right propellers, or even just a bunch of dark areas that fuel the conspiratorial imagination of an overly biased revisionist.
However, it really doesn't matter.
A newspaper drawing from 1906 does not negate the Wright's many photos from 1903 to 1905 - the early years in their development of powered flight - even if they chose to keep those photos private at the time.