Free Online Dictionary of Computing  
   Explains what EPP is with hyperlinks to additional information.
   http://wombat.doc.ic.ac.uk/foldoc/foldoc.cgi?query=EPP&action=Search

Parallel Port Background  
   As technology progressed and the need for greater external connectivity increased, the parallel port became the means by which you could connect higher performance peripherals.
   http://www.fapo.com/porthist.htm

Parallel Port Central  
   A collection of files and links to material about the PCs parallel port, including ECP, EPP, bidirectional, and IEEE-1284 modes (and other I/O ports as well). From Jan Axelson.
   http://www.lvr.com/parport.htm

EPP Printer Port  
   Enhanced Parallel Port pin-out from Computer Tips.
   http://www.ctips.com/epp.html

Ian Harries Documents and Information  
   Interfacing to the IBM-PC Parallel Printer Port.
   http://www.doc.ic.ac.uk/~ih/doc/par/