SHAREIn December 2017, an executive from the Chicago History Museum opened a 30-by-30-foot storage locker in Dixon and found more than 225 containers inside it containing roughly 5 million negative frames from Chicago Sun-Times photographs.Cardboard boxes at the bottom of the stacks had been crushed under the weight of the bins above, and negatives by photojournalists such as Pulitzer Prize-winner John H. White, Pete Souza, Bob Black and Nancy Stuenkel had spilled onto the floor.Until then, the location and condition of the newspaper’s photo archive had been a mystery — owners and employees...…SHAREIn December 2017, an executive from the Chicago History Museum opened a 30-by-30-foot storage locker in Dixon and found more than 225 containers inside it containing roughly 5 million negative frames from Chicago Sun-Times photographs.Cardboard boxes at the bottom of the stacks had been crushed under the weight of the bins above, and negatives by photojournalists such as Pulitzer Prize-winner John H. White, Pete Souza, Bob Black and Nancy Stuenkel had spilled onto the floor.Until then, the location and condition of the newspaper’s photo archive had been a mystery — owners and employees...WW…