What is the fine-grained topic of the following text: Join Gerard Koeppel, author of City on a Grid: How New York Became New York (Da Capo, 2015), for a conversation with Hilary Ballon, curator of the Museum’s 2011-12 exhibition, The Greatest Grid, about a plan that “defined the urbanism of a rising city and nation.” Reception and book signing to follow. Only return the topic.
A conversation about New York City's grid system featuring author Gerard Koeppel and curator Hilary Ballon.