Johann David Wyss
Henry David Thoreau
Frances Hodgson Burnett
Jack London
Charles Darwin
Mark Twain
Walt Whitman
Rudyard Kipling
Henry Gray
Thornton W. Burgess
James Oliver Curwood
Jerome K. Jerome
Waldemar Bonsels
Emily Dickinson
Robert Frost
John Muir
Charles Hoy Fort
G. K. Chesterton
John Wesley Powell
Gene Stratton-Porter
Ralph Waldo Emerson
Robert Michael Ballantyne
Unknown
Isabella L. Bird
Thomas Henry Huxley
Alfred North Whitehead
John Ruskin
Frederick Boyle
Florence A. Merriam
Edwin E. Slosson
Thomas Gilbert Pearson
Titus Lucretius Carus
John Burroughs
Theodore Roosevelt
Jane Andrews
Arabella B. Buckley
P. R. Kincaid
William H. Hudson
Brontë sisters
Ernest Thompson Seton