Unknown2019-01-102019-01-101966EPM-069-15-010http://hdl.handle.net/20.500.11867/15200First version: 8 sheets 8 x 10.5 inch. Typed. Annotated throughout in pencil and blue ink. Second version: 9 sheets 8 x 10.5 inch. Typed.2 versions of a document written when the dam was nearing completion about the benefits of dams on the Columbia River.Dams--John Day;Dams--The Dalles;Dams--Ice Harbor;