Abstract
The National Oceanic and Atmospheric Administration's (NOAA's) Historical Map and Chart Collection is a showcase of the Office of Coast Survey's (OCS's) rich and lengthy history. It is a digital collection of scanned maps and charts, including OCS's early scientific publications, as well as more modern nautical chart products. Its contents are freely available for searching, previewing, and downloading over the Internet. This article will explore our recent experiences managing the collection, which has been growing in stages since 1997. In order to move the access point for these charts beyond simple keyword searching and image browsing, we had to grapple with past practice and improve upon prior methods of collecting and managing geographic information. This process required a thorough understanding of the collection's contents, as well as the ability to consistently interpret geographic information from various cartographic representations. Once the geographic information was transitioned to an object-relational database management system, a user-friendly search interface capable of producing relevant results by geographic query became possible.
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