+ Official Wings home page.
+ Hermo's page. Couple of very sweet levels. One of the greatest Wings-levelmakers.
+ Antin kotisivun palavat rauniot. 75 levels - focuses on amount, not quality...
+ MBnet. From here you can find a lot of levels, but you have to be subscriper of the magazine :(
+ Scene.org - tools. You can download Grafx2 here. It's great tool for drawing levels.
+ Suomipelit.com.

Is your link missing? Contact me , and I'll do something about it ;)