The main building of the New York Public Library was completed in 1911, andin preparation for the centennial celebrations it underwent a 3 year restoration project to clean and restore the deteriorating facade.
The Vermont marble of the entire facade was cleaned using 200 gallons of Vulpex Liquid Soap with scrub brushes, hot water and steam. New York Public Library President Paul LeClerc commented “it now gleams like an alabaster palace”.