This very simple Web site has one very useful function: it contains the outline of the Library of Congress Classification System. While the outline is not searchable, users may browse through the twenty-one categories, which are then arranged by sub-category and number range. For the library user who would like to be convinced that the LOC system is a logical organizational structure, this is a good start. This site will be most useful to library patrons who need to get an overall sense of the LOC system, and to library staff members who are assisting them.