I've been reading this lately:http://books.google.com/books?id=1ShaAAAAYAAJ&printsec=frontcover#v=onepage&q&f=false
It's Automobile Topics
, an automotive trade magazine. From 1920.
What I find amazing is the advertisements. The automobile industry was only about twenty years old and the nation was emerging from WWI, yet there are an astonishing number of automobile and automobile accessories manufacturers. I see it as a great testimonial to the entrepreneurial spirit and the triumph of small business. Everyone and his dog, it seems, had a car or car part company.
Sadly, with hindsight we see that the downside of capitalism will soon be at work. In the next decade or so, most of these businesses would disappear. Maybe partly because of the Depression, but more often than not, I suspect, because these small businesses got swallowed up by huge and growing corporations. Often they then get smashed up.
It's sad, IMO. But it's neat to get a peek at a golden age of the automobile industry.