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USDA Pear Psylla Control Investigations Lantern Slide Collection

Collection

Identifier: MS0287

Staff Only

Content Description

The USDA Pear Psylla Control Investigations Lantern Slide Collection contains color lantern slides produced by the U.S. Department of Agriculture (USDA) Bureau of Entomology and Plant Quarantine, Fruit Insect Investigations, Pear Psylla Control. There are 13 slides of pears infected with pear psylla, 3 slides of maps, and a slide showing a chart of spraying operations in counties of Washington, Idaho, and Oregon in 1941.