What year did the Pittsburgh Steelers start sporting their current logo on their helmet?

The fifth-oldest franchise in the NFL, the Steelers were founded as the Pittsburgh Pirates on July 8, 1933, by Art Rooney. The ownership of the Steelers has remained within the Rooney family since its founding. The current owner is Art's son, Dan Rooney, who has given much control of the franchise to his son Art Rooney II.