Emergency brake issue cj2a 1948

I purchased a barn find cj2a 2 weeks ago that has been used on a farm for years.The body was ok but the floors had rotted very badly so this weekend I removed the tub. I have a handbrake lever in the dash but nothing else. I know that the drum should be on the transfer case but there is no sign of it and nor does there appear to be room for one.I would post a picture but I am new to this site and have not learned yet how to do that. Can anyone help me understand what is actually missing and whether the transfer box is correct for this model.Many thanks Rod.