At some time in the future, you may want to modify records that you've contributed to the NGMDB Map Catalog. For example:
If a product is available in digital form on CD-ROM or online, registered contributors to the NGMDB may use an input form [depicted here | available here] to provide us with the information needed to modify the PDP. To see an example of a map product that has online data, click here. In this example, the Publication Format was changed from "Paper" to "Digital and Paper" and a link was provided to the online version ("View the publication"). To see an example of a map product supported by a Web site containing general information, map data, and metadata, click here.
- if the product goes OUT OF PRINT,
- if the product is now available in digital form, or
- if the URL for the product has changed.