The following slideshows are a sampling of what’s available at SlideShare.net.
Natural Building Techniques
Natural Building Part 1 of 4
Building with Straw
Earthbag Building in Haiti
How to build a straw bale home
Our Strawbale House
Thesis on Earth Architecture
Stabilized rammed earth: A lightweight husk loam for Aloha Ranch
How to Design and Build with Local & Natural Materials
Earth soil as building material
Laurie Baker