It totally depends upon what you'd actually be doing. The word 'historian' doesn't make you a leader (or any other word for that matter), but in doing leadershipy things. So if you tell them you were the treasurer, that's not too impressive. If in your job as treasurer you collected and managed dues for 80 students, organized a dance marathon, and coordinated a thousand dollar donation; that's impressive.
It's not the title, it's what you do. You can be 'low-goomba' and still get a ton of leadership or 'president' and have none.