I added the source of the 1904 pictures I talked about in my previous post.
Regarding the gliding flights of the Wright brothers that somebody mentioned, there are three gliders, model 1900, 1901 and 1902. Pictures and/or drawings related to them were published before Dec. 1903. There are also witnesses. They glided, there is no doubt about this. If they really performed 700 - 1000 glides between 19 September and 24 October 1902 as they claimed is debatable because 700 divided by 36 days = 20 flights/day which appears to be too much. There are just a few pictures with the gliders of the two brothers in flight. We have to rely on them when they claim they flew hundreds of times in a little more than a month.