This article demonstrates opportunities afforded by the database file
format of many U.S. Bureau of the Census CD-ROMs. It specifically illu
strates what can be achieved by modifying and linking files extracted
from these CD-ROMs, and then by adding these files as thematic map lay
ers. The article concludes by suggesting ways in which the documents s
pecialist can network these files and maps throughout the local commun
ity. (C) 1997 Elsevier Science Ltd.