For the NR BB, you will also need to know whether the crankset it is pre- or post-CPSC (1978?) in order to get the appropriate spindle. What is the NR spindle marked? If 68-SS-120 (and no other markings), then it is pre, if just 68-SS, it should be post. This assumes thick cups (rifled openings).
There is always Phil Wood (complete BB).