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

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

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

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