An archive of CGI Programs at NCSA
ftp://ftp.ncsa.uiuc.edu/Web/httpd/Unix/ncsa_httpd/cgi

The CGI specification
http://hoohoo.ncsa.uiuc.edu/cgi/interface.html

cgi-lib.pl (A Perl library to manage CGI and Forms)
http://www.bio.cam.ac.uk/cgi-lib/

The original NCSA CGI documentation
http://hoohoo.ncsa.uiuc.edu/cgi/

Un-CGI (A program to decode form input)
http://www.hyperion.com/~koreth/uncgi.html