I knew this was online somewhere
This page will show you some brochure pictures of the CC-400,401,402. Note particularly the short rail, the reversed front standard and if you look close, the rough look of the bellows without stiffeners. If you play around with this site in folders, you may find more variations of these brochures.
http://www.cameraeccentric.com/html/info/calumet_2.html
Click on the pictures on the left side for the equivalent of a user manual.
http://www.cameraeccentric.com/html/info/
Have fun. The old Calumets are great starter camera's and do the job, which is essentially holding a lens in front of a Ground Glass or Film holder without the intervention of light until the shot is taken. The ability to change the positioning of the standards for focus and perspective is a plus, which the Calumet does quite well.
Going beyond the Calumet, you can spend HUGE amounts of money for such a box, and that's really all you get. The rest is sales hype, for the most part, until you find out you need a particular function the Calumet does not offer. You'll be a long time shooting a good Calumet before you hit that wall, in my estimation.