Football trivia question

I was listening to a sports program on the radio last night, where a trivia question was asked. I never got to hear the answer, but I’m curious. Maybe someone here knows the answer.

Almost every NFL team has a logo on their helmets. The one noteable exception is the Cleveland Browns, who have no logo. However, there is one team with a logo on only one side of their helmets. The other side is blank.

What team is it?

The Pittsburgh Steelers.

http://www.straightdope.com/mailbag/msteelers.html

Ah.

Thanks!