Robert W. Hadlow
- Oregon's Isaac Lee Patterson Memorial Bridge. The First Use of the Freyssinet Method of Concrete Arch Construction in the United States, 1932. In: Industrial Archeology, v. 16, n. 2 ( 1990). (1990):
- Elegant Arches, Soaring Spans. C.B. McCullough Oregon's Master Bridge Builder. Oregon State University Press, Corvallis (USA). (2001):