[CentOS] X11 fonts question

I'm having trouble figuring out which RPM would contain X11 fonts that go by names containing:

"-courier-medium-r-*-18-" "-courier-bold-r-*-18-" "-courier-medium-o-*-18-"

in sizes 18 (shown), 14, and 12.

so far I can't figure it out.

I've looked at the contents of all the xorg-x11-fonts-* packages that "yum list available | grep xorg-x11-fonts" lists. The best I've come up with is a bunch that contain files named "*-courXXXX-*" followed by some uppercase characters whose meaning I don't know (where I show "XXXX" above).

Since I seem to be fairly clueless on this topic, I'd welcome any useful advice that any of you can give.

thanks!