EBooks posted prior to November 2003, with eBook numbers below #10000, are filed in directories based on their release date.  If you want to download any of these eBooks directly, rather than using the regular search system you may utilize the following addresses and just download by the etext year.

http://www.ibiblio.org/gutenberg/etext06

    (Or etext 05, 04, 03, 02, 01, 00, 99,
     98, 97, 96, 95, 94, 93, 92, 92, 91 or 90)

EBooks posted since November 2003, with etext numbers over #10000, are filed in a different way.  The year of a release date is no longer part of the directory path.  The path is based on the etext number (which is identical to the filename).  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

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