Sanborn Maps is an American publisher of historical and current maps of U.S. cities and towns that were initially created to estimate fire insurance liabilities. The company's maps are frequently used for preservation and restoration efforts. This collection of insurance maps of Troy, NY with parts of the Village of Green Island, The town of Colonie and the City of Watervliet, NY.

This digital copy is owned by Rensselaer Polytechnic Institute, Troy, NY. Copyright of the original work is retained by the author.