Articles discussing Portland sewage disposal issue and Ed F. Averill lecture
Articles discussing river pollution and lecture given by Dr. William Beebe
Articles discussing pilchard conservation and sewage systems
Article describing the effects of Willamette River pollution on released fish
Articles discussing Rogue River pollution and dams on the Willamette River
Advertisement and newspaper clippings discussing William Finley lecture, Malheur Lake refuge, and river cleanup
Letters to the editor discussing Willamette River pollution
Articles discussing meeting with Oregon Caveman group and opposition to highway construction between Mount Hood and Crater Lake
Articles discussing campaign for Portland sewage system funding
Articles discussing pollution of Willamette River