USDA Bulletin No. 844, by H. S. Coe and J. N. Martin 62998 [Subtitle: Sweet-Clover Seed] [Link: http://www.gutenberg.org/6/2/9/9/62998 ] [Files: 62998-0.txt; 62998-h.htm]
Thanks to Tom Cosmas from files generously provided by the USDA through The Internet Archive and placed in the Public Domain. David
