To write our book STREET DESIGN: The Secret to Great Cities and Towns,John Massengale and I traveled a lot, measured and photographed streets we admired, and waged endless late-night debates about why they were successful. Meanwhile, Megan McLaughlin, Emily Glavey, and Kenneth Garcia were indefatigable researchers, combing the literature to probe the stories behind the streets in the book’s case studies. But we also received a boost from a phenomenal group of colleagues who suggested example streets, contributed photos, or pointed us in the right directions. Twenty-two of them went on to write short essays that add greatly to the diversity and depth of content in the book, and we are extremely grateful.