On his death at the age of 50, he left his library and insect collection to the Smithsonian Institution.

He sold many important bird and insect collections to museums and private collections.

In the late 1940s the insect collection used for study and research at UC Davis had a limited number of specimens available.

Once there, dozens of NEPMU members provided humanitarian support including medical help and conducted water quality testing and insect collection for disease examination.

In the most recent survey (based on 1986 holdings), the Collection ranked as the 8th largest university-affiliated insect collection in North America and 19th overall.

It displays both live and dead insect collections, from butterflies to bees and ants.

It displays both living and dead insect collections, from butterflies to bees, dragonflies to grasshoppers.

These, together with his extensive insect collections, were given to the University of Oxford in 1849.

Racknitz also had a sizable insect collection.

Founded in 1886, the society has an extensive library and insect collections.