In 1900, the state of New York sent an elaborate scale-model of one of America's oldest and most infamous prisons, Sing Sing, to the International Exposition in Paris. Meticulously crafted by a convict reputed to have learned the art of model-making in St. Petersburg, Russia, the structure was illuminated from within by tiny strings of light bulbs. These brightly alerted viewers to one of New York's latest penal reforms: the installation of electric lighting in Sing Sing's old stone cellblock. All underground pipes were clearly marked so as to advertise the recent installation of modern plumbing in administrative and industrial buildings. The intricate model also had automated front gates, which viewers could operate from within the model's tiny guardhouse, and movable alabaster walls that swung open to reveal the clean, bright interior of the model prison's cellhouse. Spectators were instructed that once the International Exposition was over, the model would be returned to the warden's office at Sing Sing, where it would be used as an aid for locating prison fires.

Whether or not the Sing Sing miniature presented a “realistic” picture of life inside New York's prisons, circa 1900, it was a fitting emblem of the sweeping series of penal reforms upon which the Empire State had embarked just three years earlier, when the last few private contractors had finally vacated the prison factories.