limestone | Limestone | Carboniferous Limestone | Limestone Coast | Coralline | Corallian Limestone | Styrian-Lower Austrian Limestone Alps | Magnesian limestone | Limestone, West Virginia | Limestone pavement | limestone pavement | Limestone High School | Limestone County | Keystone (limestone) | Indiana Limestone | Indiana limestone | Coralline algae | Bedford limestone | Anamosa Limestone |
The first envisioned using imported marble and bronze, while the second was to use aluminum and a local coralline limestone, a lithified coral quarried at Windley Key near Key Largo and called Keystone.