Photographic copy of photograph, photographer unknown, 26 April 1912 (original print located at Bureau of Reclamation Upper Columbia Area Office, Yakima, Washington). TRESTLE TO BE USED IN HANDLING EMBANKMENT MATERIAL, ALSO SHOWS THE HEIGHT OF FILL IN CUT-OFF TRENCH, THE CUT-OFF TRENCH AND CORE-WALL TRENCH IN HILL AT EAST END OF DAM - Kachess Dam, Kachess River, miles north of Interstate 90 , Easton, Kittitas County, WA; Avery, Christine, transmitter

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