Available to the public for research and we host an ample number of programs. Thisevening , Anthony Pangaro who is a good friend of the Historical Society will do the honors of introducing our speaker. I wanted to take a moment to greet everyone and welcome you to the massachusetts Historical Society so without further ado i turn it over to Anthony Pangaro. [applause] good evening everyone, thank you gavin. Gavin has put together a terrific number of programs at massachusetts historical including definitive conversations about the era well over ayear ago which is where i first met liz. Its a pleasure for me to have a pleasant task of introducing liz and the book. How to begin . This is a book about a lifetimes work, about a career based in the strong premise that cities were important and vital to civilization,vital to this country, not only the world and i think liz has captured it. Ill let you her tell you about the book but ill tell you one story about it which lets you know how i f