This paper analyzes early stages of Soviet and US radio broadcasting. It was a different world back then. An exploration of the technology Twain refers to in his novel, A Connecticut Yankee in King Arthurs Court. Medieval Technology Pages - Medieval technology and various inventions and developments involving everyday life in the Middle Ages. Once considered for civil engineering applications.
Site suggests the folly of such schemes.
Power Stations - Very nice pictures of power stations from before 1922. All rights reserved.