Perl XML FAQ: By Jonathan Eisenzopf. Information on using and manipulating XML with Perl.
Perl XML FAQ: By Grant McLean. Aims to provide answers to questions that crop up regularly on the 'perl-xml' mailing list.
Processing XML with Perl: Explains XML, how to interpret it using Perl, and compares the many Perl XML modules available.
XML::Parser Module Enables XML Development in Perl [Nov. 25, 1998]: Article in Perl.com.