As 69JeepCJ noted, they can be interchanged from any 76-86 CJ series vehicle as long as it's one for one as a manual or auto trans (even then a auto column can be made to work on the manual). The only difference in the basic column will be the lower coupling which is different for P/S or manual steering. This part is relatively easy to find. A column from a J10 / J20 will work but it will be slightly longer than a CJ column into the drivers area.
AMC era Jeeps used a Sagnaw steering column (subsidary of GM) If a CJ column is not available for the swap (which will be the easiest to do) The columns from a mid 70's "A" body GM car will work (Firebird, Camero, GTO, Chevelle. etc.). Another good swap is the Column from a early S10 pick-up. You can even swap in a Chysler era column from a Wrangler but the intermedate shaft coupling will need to be adp. from a "DD" (Chysler style) to the GM spline shaft. Not hard to do, but must be done correctly. If you are going that route, let me know and I can give you move insight. If you have fabbing skills, I have seen a couple really nice XJ (Cheerokee) swaps done.