Photograph showing a display of moth-repellent products at Olds, Wortman & King in Portland. At the top of the display are illustrations of moths and a sign that reads: “Mobilize Against Moths / Olds & King’s Furnishes Ammunition for Protection against Public Enemy No. 1.”

Photograph showing an unidentified man standing in a booth displaying Snow’s Insecticide Company products, advertising signs, and rugs damaged by moths. A sign above the booth reads “SNOW’S INSECTICIDE Co. / KILDEW / PERMANENT MOTH PROOFING.” The photograph was probably taken at the annual Pacific International Livestock Exposition in Portland.

Photograph showing an unidentified worker spraying trees at the Jantzen Beach Amusement Park in Portland. The worker is standing at the top of a tall wooden scaffold erected on the back of a truck. In the background is a carousel. See related image Nos. 371N5648, 371N5650, 371N5653, and 371N5654.

Photograph showing an unidentified worker spraying trees at the Jantzen Beach Amusement Park in Portland. The worker is standing at the top of a tall wooden scaffold erected on the back of a truck. In the background is a carousel. See related image Nos. 371N5648, 371N5650, 371N5652, and 371N5654.

Photograph showing an unidentified worker spraying trees at the Jantzen Beach Amusement Park in Portland. The worker is standing at the top of a tall wooden scaffold erected on the back of a truck. Two other men are standing on the ground next to the truck. At the bottom of the scaffold is a sign that reads “UNIVERSITY 1439 / SINGER’S SPRAYING SERVICE.” See related image Nos. 371N5648, 371N5650, 371N5652, and 371N5653.

Photograph showing an unidentified worker spraying trees at the Jantzen Beach Amusement Park in Portland. The worker is standing at the top of a tall wooden scaffold. See related image Nos. 371N5648, 371N5652, 371N5653, and 371N5654.

Photograph showing an unidentified worker spraying trees at the Jantzen Beach Amusement Park in Portland. The worker is standing at the top of a tall wooden scaffold erected on the back of a truck. In the background is a carousel. See related image Nos. 371N5650, 371N5652, 371N5653, and 371N5650.