SWM has been reborn after its demise in 1984 - here's a smattering of their old models, and a link to the new SWM site:
http://www.swm-motorcycles.it/
Husky Restorations of NYC do an amazing job on historic huskys, as well as a roaring trade using TT500 donks as a base for custom HL500 replicas, and their quality is unbelievable. Here's the website (and be sure to read the 'buyer beware' article - it'll make you cry...http://huskyrestoration.com/?page_id=3