The FB page WW I Aircraft and Earlier 1903 to 1918 has a member Jason Pipes who is selling books/documents relating to WW1 aviation. Below is the latest post he has put on about them:
The ollection included books and many will be for sale but I am working first on selling his archive specifically. About 100,000 pages of mostly primary source documentation, copies, rare papers, war diaries, rosters, unit histories and pilot biographies. There are entire binders dedicated to individual pilots. Most all of his documentation was backed on up cd as well with each included in their respective binders.
I have asked him if it is possible to open the sharing option so that I can share his post directly with the WOFF FB page, but he has not yet done that.