Animal Intelligence The International Scientific Series, Vol. XLIV.

Walton, Mason Augustus, 1838-

Long, William J. (William Joseph), 1867-1952; Copeland, Charles, 1858-1929 [Illustrator]

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

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

Thorndike, Edward L. (Edward Lee), 1874-1949

Duncan, P. Martin (Peter Martin), 1821-1891 [Editor]; Dallas, W. S. (William Sweetland), 1824-1890 [Contributor]; Murie, James, 1832-1925 [Contributor]; Duncan, P. Martin (Peter Martin), 1821-1891 [Contributor]

Garrod, A. H. (Alfred Henry), 1846-1879 [Contributor]; Parker, T. Jeffery (Thomas Jeffery), 1850-1897 [Contributor]; Murie, James, 1832-1925 [Contributor]; Duncan, P. Martin (Peter Martin), 1821-1891 [Editor]; Oakley, H. W. [Contributor]; Parker, William Kitchen, 1823-1890 [Contributor]; Dawkins, William Boyd, 1838-1929 [Contributor]

Dallas, W. S. (William Sweetland), 1824-1890 [Contributor]; Garrod, A. H. (Alfred Henry), 1846-1879 [Contributor]; Sharpe, Richard Bowdler, 1847-1909 [Contributor]; Duncan, P. Martin (Peter Martin), 1821-1891 [Editor]

Pfungst, Oskar, 1874-1933; Rahn, Carl Leo, 1881- [Translator]

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