- Barrett, J. W., and R. P. Newman. 1974. High yields from 100 year old ponderosa pine. United States Department of Agriculture, Forest Service, Pacific Northwest Forest Experiment Station, Research Note PNW-220. 12 p.
- Haddow, W. R., and F. S. Newman. 1942. A disease of the Scots pine (Pinus sylvestris L.) caused by the fungus Diplodia pinea Kicky, associated with the pine spittle-bug (Aphrophora parallela Say). I, symptoms and etiology. Royal Canadian Institute, Transactions 24(1). 19 p.
- Newman, E. 1858. Note on Scolytus destructor . Entomological Society of London, Proceedings 1858:6118-6120.