From the May 2005 issue of the Florida Library Association News Digest:

Have you ever wondered how many public libraries are in a congressional district? Or, have you ever wondered who the congressional representative is for a community or group of communities? A new collaboration between the American Library Association (ALA) and Christine Koontz of GeoLib, the Public Library Geographic Database (PLGDB) Mapping Project at Florida State University, will now enable users to answer these questions and more.

PLGDB is America’s first ever web-accessible and digitally-mapped public library database. It includes the locations of America’s 16,000 public libraries, population characteristics from the U.S. Census, and library-use statistics from the National Center for Educational Statistics. ALA-sponsored enhancements to the GeoLib hosted PLGDB mapping tool include a mapping layer of the 109th U.S. Congressional Districts for each state and a pop-up window listing public library outlets in each congressional district.