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