Gale Directory Library lets users build a collection of directory information over time and perform time series analyses of the data. If a researcher is interested in knowing how a certain industry fared within a specific state, Gale Directory Library makes it easy. Using Gale Directory Library and Excel, the user can chart revenue generated by the top-100 companies in that industry over the past four or five years. Then accurate comparisons to another state, or another industry can be made. With Gale Directory Library’s data export feature, the detailed information in the directory library truly comes alive.
From the basic or advanced search screens, users can limit their search to only the most current data, or the entire backfile. Alternatively, researchers can limit their search to specific years.
Retrieved 07/31/2012 http://www.gale.cengage.com/DirectoryLibrary/how.htm