From  The Negro In Portland: A Progress Report 1945-57  - City Club

"On September 29, 1942 the Oregonian ran a front-page  headline that read "New Negro Migrants Worry City" and another Oregonian article reported that some Whites complained that the Kaiser Specials were "bringing in an army of Negro workers" that "Portland didn't want."... Shortly thereafter the Oregonian reported Mayor Earl Riley's claim that Portland can absorb only a minimum of Negros without upsetting the city's regular life."

Excerpt from "A Menace to the Neighborhood": Housing and African Americans in Portland, 1941-1945 - by Rudy Pearson
Oregon Historical Quarterly
Vol. 102, No. 2 (Summer, 2001), pp. 158-179
Published by: Oregon Historical Society