Agriculture: Biographies
- Arthur Young
- Columella
- Edmund Ruffin
- Edward John Russell
- George Washington Carver
- Harvey Washington Wiley
- James Hamilton Couper
- Jethro Tull
- Leonidas Lafayette Polk
- Mary Elizabeth Lease
- Norman Ernest Borlaug
- Oliver Hudson Kelley
- Robert Bakewell
- Seaman Asahel Knapp
- Sir Horace Curzon Plunkett
- Sir John Bennet Lawes
- Stephen Moulton Babcock
- Thomas Burr Osborne
- Thomas William Coke
- Trofim Denisovich Lysenko