Steelmark' logo designed by Lippincott and Margulies, 1958 for the
Complete History Part 3 Pittsburgh Steel Company Monessen Works
Pittsburgh Steelers Logo and symbol, meaning, history, PNG, brand
A Brief History of the American Steel Industry
Pittsburgh Steelers Logo, symbol, meaning, history, PNG, brand
House of The Steel Ring Champions
Pittsburgh Steelers Logo History: Unchanged, the Way They Like It
The History Behind the Logo: The Steelmark – YinzerShop
Reply to @steelers Pittsburgh Steelers helmet history
Crazy Conspiracies 2: The Steelers Don't Own Their Logo - Sports
U.S. Steel's logo is quite the classic, Mine