William B. Helmreich (1945-2020) was the author of many books, including The Brooklyn Nobody Knows, The Queens Nobody Knows, and The New York Nobody Knows: Walking 6,000 Miles in the City, which won the Guides Association of New York Award for Outstanding Achievement in Book Writing. He was Distinguished Professor of Sociology at the City College of New York's Colin Powell School for Civic and Global Leadership and at CUNY Graduate Center.