[1] His work includes the Chronicle Building for the Spokane Chronicle, Rookery Building in Spokane, Washington (demolished in 2006), and other buildings in Spokane, several mansions, and the new design for a community serving the Hanford nuclear plant, now part of Gold Coast Historic District (Richland, Washington).
[3] He immigrated to the U.S. in 1905, ultimately settling in Spokane, Washington.
[3] Soon after a prolific building period in the 1920s that included his terracotta-adorned Art Deco design work for the Chronicle Building and Paulsen Medical Building in Spokane, the Great Depression hit and the staff at Pehrson's firm fell from 29 to two.
He designed government housing, schools and other buildings developed to serve the Hanford nuclear site.
[4] Washington State University has a collection of documents about his work.