The cable I ordered should arrive tomorrow. I realize now that I wasn't clear in my initial post. Between the parking brake pedal and the rear brakes there are two cables. I blew the one connected to the pedal (front). I think I ordered the other (rear) one.
As it happens, I think the po installed the wrong rear cable - it is routed strangely and looks too short. What's the right front half of the cable for the parking brake on a 1980 traveler?