Okay, I knew it would happen. As soon as I posted that last e-mail, I found what I was looking for. I just wish ICANN would have made it easier to find this via their web site. (thanks Google)
http://www.icann.org/registrars/ra-agreement-17may01.htm "3.3.1 At its expense, Registrar shall provide an interactive web page and a port 43 Whois service ..."
