Greetings!
Contrary to expectation, I have found some documents that are in the public domain, are not yet mentioned in the technical database of the Forum, and seem to me to be useful. I would like to post them, but the format prescribed seems a bit awkward, in that you want clarifying comments added to the title field. I feel that a summary, abstract or brief review deserves its own field. E.g.:
Title: Rotary Wing Development (American Helicopter Society Semi Technical Bulletin No. 1, May 1944)
Author: Bennett, James A. J.
Publisher: American Helicopter Society
Abstract: A semi-technical briefing on both autogyros and helicopters, written for intelligent laymen and newcomers to the field of vertical flight at the very dawn of that field. Very useful introduction to the entire field of rotary flight. 20 pages.
What do you think?