Some small still makers:

http://www.ferromit.com

All kinds of distillation systems and components:

http://stilldragon.com/

Great resource on column tray design:

http://seperationtechnology.com/distillation-column-tray-selection-1/

Good discussion about still legality in USA:

http://www.clawhammersupply.com/blogs/moonshine-still-blog/7155304-is-making-moonshine-legal