It's not an all-encompassing of everyone who made the NFL great, but Andrew Brandt writes about the NFL's founding fathers at the National Football Post with a couple mentions to the Green Bay Packers:
Vince Lombardi: Having lived in Green Bay for nine years, I was reminded of Lombardi roughly every twelve seconds. The name bestowed upon the Super Bowl trophy, his patented overcoat, fedora, and sideline barking will never be forgotten nor repeated. Lombardi served as an inspiration to us all.
He also includes DE Reggie White, but his biggest accomplishment, and the reason why he was included with the NFL's founding fathers (the lawsuit that established free agency), happened before he joined the Packers.