Matthew A. Postal has been a researcher at the Landmarks Preservation Commission of New York since 1998. He is co-author of the Guide to New York City Landmarks (2009) and 10 Architectural Walks in Manhattan (2009). An architectural historian specializing in 20th-century architecture, urbanism and interiors, he holds a PhD in art history from the Graduate Center of the City University of New York, and is an adjunct professor at the New York School of Interior Design and Lewis & Clark College.