he's the cover of the book, genius of place, the life of frederick olmstead, a photograph of mr. lmstead on the cover. inside, there's lots of pictures in case people are interested in buying the book, a lot of designs as well. in new york, though, another e-mail and another tweet, and 24 is a tweet from vermeer417. what is olmstead's contribution to vox's bridge design in central park? >> pretty much none. vox deserves credit for the bridges he designed all over central park. those are tribute to vox's supreme skill as an architect. lack of a better term, he's a structural architect. olmstead was a landscape architect and vox made beautiful bridges. the influence on vox was the fact he traveled in the circles of the hudson river school painters. vox loved to design bridges so that as you walk under them, the bridge, the arch of the bridge frames your view like a hudson river school painting. >> and here is another e-mail. can you ask the author about the names of the gates at central park. i walk by them often, but have never heard any description of how they came to be or their