The "Atlas of Cancer Mortality in the United States, 1950-94" was released in December 1999. Two Web sites are associated with the Atlas. "The Atlas On-Line" is an interactive version of the Atlas, which enables the user to view and print everything in the atlas. The user can also download the maps and figures appearing in the Atlas, as well as the data used to generate the maps. "Customizable Maps" enables the user to create maps by controlling parameters such as number of ranges, ranging method, and colors. The user can also zoom, pan, and view an individual state, state economic area, or county.