Because most immigrants were poor when they arrived, they often lived on the Lower East Side of Manhattan, where rents for the crowded apartment buildings, called tenements, were low. The Lower East Side Tenement Museum is in a building that used to be a tenement and it tells the story of immigrants in the City.
Change to a 115-grit diamond resin attachment and repeat the procedure as stated in Step 2. This attachment is less harsh than the 400-grit resin bond and will produce a smoother finish. Remember to constantly add water to the surface as you sand the travertine tile.
The top color of the tile is all the way through the tile. So a travertine colored tile will have a tan colored edge after you cut it. Same with a grey slate colored one or a white one. These are possible with porcelain tile because the clay used in them is more refined and actually holds the color that's added to it. Porcelain tiles can be glazed also. Porcelain is a stronger tile, and usually more expensive. It is a big outfit but they do not distribute retail all by themselves. Not sure why you feel Chicago is anything special-there are only 9-10 company owned DalTile selection centers in country and there are not 2 in any city.