Okay, I was able to resolve my problem. I used MapSetToolKit to manually install the img files from the CaTopo directory and was now able to see all the detail for Calif. I also had done a lot of installs and uninstalls, so possibly the tip by Darto was what was causing my problem. I was using basecamp, not mapsource and didn't have very many map products to select, so it's hard to say if wrong selection was causing me the problem. And I had started with mapsource 2004 initially installed and maybe the uninstall left some debris that caused my problems with basecamp.