[United States] : [publisher not identified] · leaf 101
The basement of the American Circle Building, New York City, is one of the main: exits from the Columbus Circle Station of the subway, and although installed in 1914, and subject to the heaviest traffic, the Grueby Sand Gray floor shows not the slightest sign of wear.
Associated Tile Manufacturers (Beaver Falls, Pa.) · Tiles · Building materials
Internet Archive · Building Technology Heritage Library · Public domain (published before 1931). Free to use for anything.
