Early History of Soybeans and Soyfoods Worldwide (1024 BCE to 1899)

by William Shurtleff; Akiko Aoyagi

The world's most comprehensive, well documented and well illustrated book on this subject. With extensive subject and geographical index. 463 photographs and illustrations. Free of charge in digital PDF format.

History of U.S. Federal and State Governments' Work with Soybeans (1862-2017)

by William Shurtleff; Akiko Aoyagi

2017 · Soyinfo Center

The world's most comprehensive, well documented, and well illustrated book on this subject. With extensive subject and geographical index. 362 photographs and illustrations. Free of charge in digital PDF format on Google Books