EDIT: Hmmm... Links don't go to the .pdf of the blueprints. Weird. Anyway, just go to http://www.carhartt.com/plans and click from there.
Carhartt.com/Plans
Ash Toboggan Sled blueprints
Fire Table blueprints
Dog House blueprints
Carhartt.com/Plans
Ash Toboggan Sled blueprints
Fire Table blueprints
Dog House blueprints