In 2009, I was invited to contribute photographs to the revised edition of the landmark Encyclopedia of New York City, edited by Columbia University historian Kenneth T. Jackson. I spent much of the summer walking the streets of New York (and flying over them) in order to make pictures of subjects that were new or changed since the first edition had been published in 1988. Many additional sites simply warranted better photographs. By the time the book was published in 2010, it included nearly 200 of my images, and I was credited Associate Illustrations Editor. Even in the digital age, the Encyclopedia is a masterpiece of extensive research, and rich historical knowledge all contained inside a single volume.