Els aucells més útils a la agricultura de Catalunya

Stratton-Porter, Gene, 1863-1924

Smith, E. Boyd (Elmer Boyd), 1860-1943 [Illustrator]; Brown, Abbie Farwell, 1871-1927

Jones, Thomas Rymer, 1810-1880 [Translator]; Brehm, Alfred Edmund, 1829-1884

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

Mershon, Wm. B. (William Butts), 1856-1943 [Editor]

Green, Roland, 1890-1972 [Illustrator]; Pycraft, W. P. (William Plane), 1868-1942

Whymper, Charles, 1853-1941 [Illustrator]; Robinson, Phil, 1847-1902

Hook, Bryan, 1856-1925 [Illustrator]; Fowler, W. Warde (William Warde), 1847-1921

Saunders, Marshall, 1861-1947

Kearton, Cherry, 1871-1940 [Photographer]; Kearton, Richard, 1862-1928