The path to the file is made up of single digits corresponding to all but the last digit in the filename. For example an eBook of filename 10234 would be found at: http://www.gutenberg.net/1/0/2/3/10234 or filename 24689 would be found at: http://www.gutenberg.net/2/4/6/8/24689 An alternative method of locating eBooks: http://www.gutenberg.net/GUTINDEX.ALL