Who built my building? When? Who designed it? Has it changed? What did it used to look like? Who’s lived there over the decades? Has it been written about or photographed? New York City enjoys unrivaled resources for hunting down answers to those questions. In the past, such research meant visiting archives, city offices, libraries and historical societies, but in recent decades vast amounts of material have migrated to the cloud. Architectural historian Anthony W. Robins will highlight some of the most useful on-line resources for NYC building research and demonstrate their use.