JohanEl54 I'm using version Lightroom CC 1.5. I'm using a Cannon EOS Digital Rebel XSi (aka EOS Kiss Digital X2). It's on the list of supported cameras for Adobe Camera Raw: Cameras supported by Camera Raw.
I also double-checked that I had been shooting those images as raw files and yep--it's just like I set it up on the first day. Large Raw files.
Here's a screenshot of the file info pane in Lightroom CC in case you see something I may be misunderstanding:

Seeing "Original File" makes me think that should be the raw file. But then it says JPEG...
I'm not sure whether I shot raw+jpg or just raw. The settings on my camera look as if it's just raw. Is it always a default that a camera shoots both? If so, then ok, that's fine, but I want to know 1) where exactly the raw files are so I can rest easy, 2) why Lightroom CC only imported the jpgs into the library.
Lightroom does not automatically change raw files to jpegs. It couldn't do that even if you wanted it. So if Lightroom only imports jpeg images, then the most likely explanation is that you have shot only jpeg images. That can happen to the best of us. You would not be the first person who insisted that they shot raw images, only to find out that the camera settings had changed and they had been shooting jpegs for some time...
One possibility is the following. As far as I know, Canon has some kind of 'Green' program setting on some consumer EOS cameras. If you choose that setting, the camera will automatically switch to shooting jpeg, even if the camera settings are raw. When you switch the camera to another program again, you'll be shooting raw again. That means that you cannot rely on just looking at the camera settings. You have to actually look at the images on the SD card to see what you have been shooting. And if you do not have those images anymore, then shoot a few more and import them into Lightroom to see what happens.