Transmission ID

I have been given a 1965 cj-5 by my father. I've started doing research before I travel to pick the vehicle up. Based on what I remember from several years ago (the last time I saw the cj), I have identified the engine as an f4-134. Im having trouble with the tranny, however. I know it is a 3 speed, and I know it has overdrive. There are four shifters (two going into the transfer case and two going into the transmission). I have been looking for information on this transmission but i am having trouble identifying it. If there are any ideas I would appreciate the help

Thank You