Pierce, W. D.
1904. Some Hypermetamorphic Beetles and Their Hymenopterous Hosts. Univ. of Nebraska Studies, Vol. IV, No. 2, pp. 153-190.
This gives a description of the bee community of Epinomia triangulifera Vachal, a list of insects in it and valuable data on their parasitic interrelations.
Vestal, A. G.
1913. An Associational Study of Illinois Sand Prairies. Bull. Ill. State Lab. Nat. His., Vol. X, pp.
Stenroos, K. E.
1898. Das Thierleben im Nurmijärvi-See. Eine Faunistisch-Biologische Studie. Acta Soc. Pro Fauna et Flora Fennica, Vol. XVII, pp. 1-259.
A descriptive associational study of a lake fauna, correlating the fauna and the vegetation.
Forbes, S. A., and Richardson, R. E.
1909. The Fishes of Illinois. Ill. State Nat. Hist. Surv., Vol. III. pp. 357.