Here are links to web pages with information on MG Midgets and Austin Healey Sprites.

An Australian email discussion group on Sprites and Midgets...
http://autos.groups.yahoo.com/group/spridgets-aus/

and an equivalent UK group
http://autos.groups.yahoo.com/group/midgetsprite/

A page of technical tips assembled by Sprite expert and 'doctor', Colin Dodds.  http://www.spriteparts.com.au/techtips.htm

This page from the MG Owners Club website in the UK can help identify what to look for if you are considering purchasing a Midget or Sprite.
http://www.mgcars.org.uk/cgi-bin/gen5?runprog=mgoc&p=emg/mgmidg.htm

Advice from the Austin Healey Club USA on choosing between different models of Sprite - applicable also to MG Midgets.
http://healey.org/content/view/11/25/

Website of the Sprite Car Club of Australia, world's longest running Sprite club.  Information about Australian Sprites and Midgets, includes BMC service bulletins for Sprites and Midgets - click on 'Technical Links' page, details of club events and extracts from the club magazine.
http://www.spriteclub.com/

A list of books compiled by the UK Midget and Sprite Club about the production, history and restoration of Midgets and Sprites.
http://www.mgcars.org.uk/midgetspriteclub/MascNew/Books.html