Pliny the Elder
John Milton
Alexander von Humboldt
Robert Lawrence Stine
Bernardin de Saint-Pierre
James D. Mauseth
Kokuritsu Kokkai Toshokan (Japan)
Robin Wall Kimmerer
DK Publishing
Merlin Sheldrake
Peter H. Raven
Peter W. Hawkes
Germaine de Staël
United States. General Accounting Office
George N. Agrios
Bryan Edwards
Nicholas Culpeper
Kingsley R. Stern
Carl Linnaeus
John Gerard