Before the Internet

I bought a good book a few months ago on Amazon.  It's a used textbook from the 90's on sales management.  One reason that I like it is because it predates the Internet bubble.  It mentions the Internet and new technology and that those will be important in the future, but it doesn't go into great detail about the web.  The web isn't the alpha and omega.  I like that.  I'm going to start seeking out more business related books that aren't so Internet heavy, i.e., ones that predate the web.  Just like back in 1999 the web has become so yesterday's news.  Business is business and the web is just a piece.