1 INTRODUCTION

Managing a collection of 22 historic sites operated by nonprofits would be a challenging matter for any organization. On a daily basis, numerous issues affect the sites, from minor maintenance to major conservation and preservation issues. There are the challenges of working with the nonprofit stewards of each individual site, as well as with the legal owner of all the sites, the City of New York Department of Parks and Recreation (DPR). To manage all these responsibilities, the Historic House Trust of New York City has implemented an extensive collection of databases, or an information system (IS). Building on the data in the IS, a geographic information system (GIS) component has been implemented for additional analysis and informational display. Information systems, GIS, and other digital media have resulted in more informed and efficient management of the sites.