GIS data services at NCSU libraries are focused on delivery of data directly to departmental computer laboratories, classrooms, offices, and research units. Data is accessible in two network environments. To assist data access and utilization, phone, E-mail, and and in-library consultations are supplemented by on-site technical support visits. Extensive Web-based documentation facilitates spontaneous, unmediated access to data. In collaboration with the College of Forest Resources and the North Carolina Cooperative Extension Service, the libraries are also implementing a Web-based mapping system that provides public and non-GIS user access to environmental, economic, and development data.