The museum has benefited from the donation of several private collections:

* Beatty. G. H., & A. F. (Odonata)
* Bierlein, D. L. (Lepidoptera)
* Byers. R. A. (Pasture insects)
* Carter, R. E. (Lepidoptera)
* Frost, S. W. (general)
* Haas, V. L. (general)
* Kim, K. C. (general; vertebrate ectoparasites)
* Long, W. W. (Lepidoptera)
* Patterson, G. F. (Lepidotpera - butterflies)
* Pepper, J. O. (Aphids and plant lice)
* Paxton, W (Orthoptera - Tetrigidae, 1999).
* Shetlar, D. J. (general)
* Thomas, C. A. (Lepidoptera)
* Werschkow, Vera. York, Pennsylvania (general collection of George Werschkow, 1999)