A man, wearing a Douglas Fir Plywood Association lab coat, is adjusting the tension during plywood testing at St. Paul & Tacoma Lumber warehouse. Ordered by Douglas Fir Plywood Association, Tom Sias.

Douglas Fir Plywood Association (Tacoma); Plywood; Product inspection--Tacoma; Testing--Tacoma--1950-1960; St. Paul & Tacoma Lumber Co. (Tacoma); Lumber industry--Tacoma--1950-1960;

Detail showing break points of stress tests on plywood at St. Paul & Tacoma Lumber. Ordered by Dave Countryman, civil engineer with Douglas Fir Plywood Association.

Douglas Fir Plywood Association (Tacoma); Plywood; Product inspection--Tacoma; Testing--Tacoma--1950-1960; St. Paul & Tacoma Lumber Co. (Tacoma); Lumber industry--Tacoma--1950-1960;

Five men watch intently while one of them is tightening the pressure during plywood testing at St. Paul & Tacoma Lumber warehouse. Ordered by Douglas Fir Plywood Association, Dave Countryman.

Douglas Fir Plywood Association (Tacoma); Plywood; Product inspection--Tacoma; Testing--Tacoma--1950-1960; St. Paul & Tacoma Lumber Co. (Tacoma); Lumber industry--Tacoma--1950-1960;

Detail of plywood testing at St. Paul & Tacoma Lumber warehouse. Ordered by Douglas Fir Plywood Association, Dave Countryman.

Douglas Fir Plywood Association (Tacoma); Plywood; Product inspection--Tacoma; Testing--Tacoma--1950-1960; St. Paul & Tacoma Lumber Co. (Tacoma); Lumber industry--Tacoma--1950-1960;