There are 13 subjects in the top level of the hierarchy, with about 70 subcategories mostly in one more level, but with a few in two more. Sites are listed in both levels of the hierarchy. Some sites are listed in more than one place in the hierarchy, but all such sites are labeled in both listings with all the subjects they're listed under. Each site is described in as little as one line or as much as a paragraph. Descriptions sometimes include separate links to various parts of the reviewed site.
Sites are also assigned keywords, and an author is listed for each one.
The Internet Public Library offers lots of other resources in addition to this directory. For instance, there is a Youth Division and a Ready Reference Collection , both of which I have described elsewhere in this guide. Updated November 13, 1998. Send comments to Aaron Taylor .