Robert Livingston Stevens was president of the Camden and Amboy Railroad in the 1830s and 1840s. When the John Bull steam locomotive arrived on the C&A property, it was originally named Stevens in his honor. Although his father is occasionally credited with the invention of the flanged T rail for railways, Robert Stevens at 82 is considered to have been the inventor used in the first all-iron rail construction of the Camden & Amboy.
The estate is currently listed for sale for $16.75M.
http://www.luxist.com/2009/11/12/the-stevens-estate-estate-of-the-day/
http://www.nytimes.com/2005/06/12/realestate/12njzo.html?ex=1276228800&en=de7a3831f15e3bdf&ei=5088&partner=rssnyt&emc=rss