So from what I've heard (I'm too young to remember a world without everyone having high speed internet), companies would mail out paper catalogs and if you saw something you wanted in those books, you would somehow order it. So how did this work? Did you have to call them, giving them a credit card number/what product you want? Did you have to cut out something (like the listing) from the catalog and mail it in with some cash or a check? How did companies know who to send catalogs to?