The International Association of Marble, Slate and Stone Polishers, Rubbers and Sawyers, Tile and Marble Setters' Helpers and Marble Mosaic and Terrazzo Workers' Helpers was an American labor union organization, recorded by Guinness World Records in 1990 as the longest union name. The name was extended in 1921, when the tile-setters' helpers were incorporated.
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International Association of Marble, Slate and Stone Polishers, Rubbers and Sawyers, Tile and Marble Setters' Helpers and Marble Mosaic and Terrazzo Workers' Helpers Wikipedia(Text) CC BY-SA