Second-pulpiest flying machine (after, naturally, the dirigible) the autogyro is barely seen these days but carved out a niche for itself in the 20s and 30s.
There’s a formation of US Army Aviation Corp autogyros being put through their paces. No date on the video, and no identity of which model of autogyro is being demonstrated, which is unfortunate. Still a very cool and pulpy piece of newsreel footage!
(video here on Youtube, if the embedded video fails to show up above)