The National Agricultural Library (NAL) digital collections.
Here you will find full-text of current and historical research and information, including images on agriculture, food and the natural environment.
Goals:
Free 24/7 online access to full-text of agricultural literature
Stable and sustainable storage for digital materials
Permanent unchanging links (handles) to full-text documents
Increased accessibility through AGRICOLA and Internet search engines
Preserves the intellectual assets of USDA
Centralized location for USDA publications