by Thomas R. (Thomas Robert) Henry
by John Timbs
by Francis C. (Francis Channing) Woodworth
by Royal Dixon
by Ernest Thompson Seton
by John Burroughs
by John Burroughs
by John Burroughs
by William J. (William Joseph) Long
by Alfred Wellesley Rees
by Edmund Selous
by George John Romanes
by William J. (William Joseph) Long
by C. Lloyd (Conwy Lloyd) Morgan
by Catherine Cooper Hopley
by William J. (William Joseph) Long
by G. (Georg) Hartwig
by Charles Albert Jones
by Alfred Edmund Brehm
by Frédéric Houssay
by J. Hampden (John Hampden) Porter
by Sir Samuel White Baker
by William J. (William Joseph) Long
by Edward Turner Bennett
by Edward Hamilton Aitken
by Wilhelm Bölsche
by William T. (William Temple) Hornaday
by Alfred Edmund Brehm
by Samuel G. (Samuel Griswold) Goodrich
by Thomas G. (Thomas George) Gentry
by William J. (William Joseph) Long
by Charles Mayer
by Dallas Lore Sharp
by William J. (William Joseph) Long
by Enos A. Mills
by Mason Augustus Walton
by Alfred Edmund Brehm
by Wilhelm Bölsche
by William J. (William Joseph) Long
by Alfred Tylor
by Robert Mearns Yerkes
by W. P. (William Plane) Pycraft
by Charles Derennes