The Online Books Page is an index of e-text books available on the Internet. It is edited by John Mark Ockerbloom and is hosted by the library of the University of Pennsylvania. The Online Books Page lists over 18,000 books, and has several features, such as A Celebration of Women Writers and Banned Books Online.
... spread out with 29.0% under the age of 18, 5.0% from 18 to 24, 29.0% from 25 to 44, 24.2% from 45 to 64, and 12.7% who are 65 years of age or older. The median age is 39 ...