The Works Escorts http://www.osella.com.au/
A fantastic site with a picture gallery, technical info and lots more.  Recommended

The Beast http://www.beastmaster.ic24.net/
Nick's Mk1 has an injected pinto, air-con and independent rear suspension!

The RS Owners Club http://www.rsownersclub.co.uk/

The Ford AVO Owners Club http://www.btinternet.com/~AVO.Club/avo_main.html

www.EscortFans.de http://www.escortfans.de

Mk1 Escort Register Germany http://www.escort1.de

Speed Shack http://www.speedshack.co.uk/
A great site for secondhand Escort parts.