No RPM-GPG-KEY to import?

I'm following the redhat6 security guide ( https://access.redhat.com/documentation/en-US/Red_Hat_Enterprise_Linux/6/pdf/Security_Guide/Red_Hat_Enterprise_Linux-6-Security_Guide-en-US.pdf ) and on page 22 it indicates that the initial RPM-GPG-KEY should be imported into the keyring database. However, I've mounted the installation iso and I see many RELEASE-NOTES-* and EULA* files but only RPM-GPG-KEY-redhat-beta and RPM-GPG-KEY-redhat-release. The same RPM-GPG-KEY-redhat-beta and RPM-GPG-KEY-redhat-release rpms are already under /etc/pki/rpm.gpg directory. I tried to figure out how to check if by default they might already be installed: "# rpm -qa gpg-pubkey*" , but it comes back empty. I've never used RHEL6 GPG keys before. Can anyone assist me with setting it up? I've searched the web and can't find any information if the RPM-GPG-KEY is not on the cdrom.