(Formerly Local Market Audience Analyst.) Provides sophisticated demographic, segmentation, and targeting data for media planners and consumer marketers. The link will take you to the Kanter Media/SRDS home page. Once there, select Nielsen Segmentation & Market Solutions from the list of services to the left.
Provides demographic, geographic, and psychographic data on consumer buying behavior, largely as it relates to brands and media.
Instructions for how to search it can be found at http://libguides.gwu.edu/simmons