Animal Intelligence The International Scientific Series, Vol. XLIV.

Hornaday, William T. (William Temple), 1854-1937

Aitken, Edward Hamilton, 1851-1909

Stoffel, Cilia, 1887-1976 [Translator]; Copeland, Charles, 1858-1929 [Illustrator]; Long, William J. (William Joseph), 1867-1952

Woodworth, Francis C. (Francis Channing), 1812-1859

Seton, Ernest Thompson, 1860-1946

Rees, Alfred Wellesley, 1872-1917

Horsfall, R. Bruce (Robert Bruce), 1869-1948 [Illustrator]; Sharp, Dallas Lore, 1870-1929

Skertchly, Sydney B. J. (Sydney Barber Josiah), 1850-1927 [Editor]; Tylor, Alfred, 1824-1884

Morgan, C. Lloyd (Conwy Lloyd), 1852-1936

Bölsche, Wilhelm, 1861-1939