Question: A. Hall and Sons Terra Cotta produce in its kilns the terra cotta for a bulding that has been a National Historic Landmark since what year?

<P0-S0>  The original site for the building was purchased by F. W. Woolworth and his real estate agent Edward J. Hogan by April 15, 1910, from the Trenor Luther Park Estate and other owners for $1.65 million. <P0-S1>  By January 18, 1911, Woolworth and Hogan had acquired the final site for the project, totaling $4.5 million. <P0-S2>  More than a century after its construction, it remains, at 241.4 m , one of the 100 tallest buildings in the United States as well as one of the 30 tallest buildings in New York City. <P0-S3> The Woolworth Building, at 233 Broadway, Manhattan, New York City, designed by architect Cass Gilbert and constructed between 1910 and 1912, is an early US skyscraper. <P0-S4>  It has been a National Historic Landmark since 1966, and a New York City landmark since 1983. <SEP> <P1-S0> Terra Cotta Building is a historic office building and display center located at Alfred in Allegany County, New York. <P1-S1>  It was built in 1892 by the Celadon Terra Cotta Co and later sold in 1906, to the Ludowici Company of Ohio, which became the Ludowici-Celadon Company. <P1-S2>  It is a one-story, 16 ft , 25 ft building built almost entirely of terra cotta bricks, ornamental and roofing tiles manufactured by Celadon. <P1-S3>  The building was designed as a sales office for the company, and was considered a "catalog" of their work. <P1-S4>  A replica was erected at the 1893 Columbian Exposition in Chicago. <P1-S5>  The building was the only remaining structure after a fire broke out on August 29, 1909 and destroyed what was at the time called Ludowici-Celadon Company. <SEP> <P2-S0> The Grafton Bank is a historic bank building located at 225 E. Main St. in Grafton, Illinois. <P2-S1>  The Classical Revival building was constructed in 1913. <P2-S2>  The buff brick building features extensive terra cotta ornamentation on its front facade. <P2-S3>  A Diocletian window and terra cotta transom bar top the entrance, and terra cotta pilasters stand on either side. <P2-S4>  A classical entablature tops the entrance; the entablature includes an architrave, a frieze inscribed with the bank's name, and a dentillated three-section cornice. <P2-S5>  A brick parapet wall tops the facade; a stepped parapet recedes from the wall along the sides of the building. <P2-S6>  The bank which originally occupied the building closed in the 1930s, and the building has since been used for a variety of other, mainly commercial, purposes. <SEP> <P3-S0> A. Hall and Sons Terra Cotta was founded in 1846 in Perth Amboy, New Jersey due to Perth Amboy's rich supplies of clay. <P3-S1>  It was one of the first successful terra cotta plants in the United States. <P3-S2>  Originally, the manufactory produced porcelain and household wares but transitioned to terra cotta items as time progressed. <P3-S3>  The company, always located at 59 Buckingham Avenue, changed its name to the Perth Amboy Terra Cotta Company and then to Atlantic Terra Cotta which, as the preeminent terra cotta producer in the United States, went on to produce in its kilns the terra cotta for such notable buildings as the United States Supreme Court, the Philadelphia Museum of Art, and the Woolworth Building.