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UMass Amherst Libraries

Hope T. Ritter Papers, 1947-1987

6 boxes (9 linear feet)
Call no.: MS 572

The protistologist Hope T. Ritter (1919-2007) is recognized for his important research on the evolution of mitosis. A native of Allentown, Pa., Ritter received his doctorate at Lehigh University in 1955 for a study of the gut fauna in a subterranean termite. Building on this research during the 1950s, he became the first scientist to successfully culture Barbulanympha, a hindgut flagellate symbiont of the wood-eating cockroach Cryptocercus, which has since become a model organism for study of the evolution of mitosis. After teaching at Harvard (1957-1961) and SUNY Buffalo, Ritter moved to the University of Georgia in 1966, where he remained until his retirement from teaching in 1987.

The Ritter Papers contain valuable professional correspondence, lab notebooks, and a large number of electron micrographs documenting his research.


  • Barbulanympha
  • Protozoans--Composition


  • Ritter, Hope T

Types of material

  • Scanning electron micrographs

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