1893, Steven Decatur Hatch.
Brick with terra-cotta ornament. Commercial. (Source: "Terra-Cotta Skyline", by Susan Tunick).

Despite the mutilated ground floor [portrait view], the upper parts of the sandstone and brick [and terra cotta! -- ed.] edifice offer a majestic expression of Romanesque Revival. Named Roosevelt after Cornelius, Teddy's grandfather, who lived on the block in midcentury, when Union Square was the place to reside. (AIA Guide to New York City, 4th Edition, p. 166.)

The Rube was wondering if the "twistee" columns between the windows in 3-jpg might be cast iron, but the fact that they are cast in sections (cast iron would be one piece) and are the exact same color as everything else (cast iron would have to be painted to match) says "terra cotta" to him.