If you are chosen for the 500, generally you have the largest market value. You've reached where you want to be. If you are there you are among the leading companies in America. |
Look at the railroads and Western Union; some of those have been antiquated. |
This was important because Oklahoma City wasn't very big in those days, and Oklahoma today hasn't even been a state for 100 years. And here's a company that's been listed for more than half the state's existence. |