AgNIC - Agriculture Network Information Center portal, search form and links for browsing, directory to sites

National Agriculture Digital Repository:

• Agricultural Economic Report; Agriculture Handbook; Agriculture Information Bulletin; Bean Improvement Cooperative Annual Report; Bean Improvement Cooperative Natl Dry Bean Res Assoc Conference; Division Pomology Bulletin; Economic Research Service Staff Report; Fruit Vegetable Market News Report; Pomological Watercolors; Report Commissioner Agriculture; Report Secretary Agriculture; Rural Development Perspectives; Rural Development Research Report; Technical Bulletin United States Department Agriculture; World Poultry Congress; and Yearbook United States Department Agriculture

• Some monograph publications and other non-series publications are also available. The documents are a touch awkward to use though. You need to page through them one page at a time. But if you use their "print pdf" button, you can get a PDF file for your use

Economics

AgEcon search - scholarly research in agriculture and applied economics; not only docs - working papers, conference papers, select full-text journals {University of Minnesota)

Health

Economic Research Service - national and state data for agriculture and nutrition health (Dept. of Agriculture)

Statistics

National Agricultural Statistics Service - Census as well as surveys, data & statistics, publications, etc. for US, state and county