The Equitable Building (now Commonwealth Building) is a 14-story commercial office tower in Portland. It is noted as one of the first glass box towers ever built, pioneering many modern features and predating the more famous Lever House in Manhattan.
Ross B. Hammond
J. Donald Kroeker
"Equitable builds a leader"
Architectural Forum, 9/1946
Clausen, Meredith L. 1991. "Belluschi and the Equitable Building in History." Journal of the Society of Architectural Historians 50 (2): 109-129.
1948. "Equitable builds a leader." Architectural Forum (9): 97-106.