Twenty years ago, if you wanted to know what homes were on the market, you still had to go to a Realtor's office to look at a listing book (and you weren't allowed to take it anywhere). Realtors held sway over all listing information. If you were a buyer, it was tough to get information from anywhere except a local real estate agentm, writes the Chicago Tribune.
The 20-year metamorphosis for real estate
Source: Chicago Tribune