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Color illustrations on front and back panel by R.B. Rogers.
This archived document is maintained by the Oregon State Library as part of the Oregon Documents Depository Program. It is for informational purposes and may not be suitable for legal purposes.
Blue River to Westfir -- Westfir to Blue River. Each audio file contains identical information, but in correct order for driving in opposite directions.
General statistics of Willamette Basin Project -- Linn County statistics: History -- Population -- Climate -- Precipitation -- Flood control -- Bank protection -- Drainage -- Irrigation -- Land use --...
General statistics of Willamette Basin Project -- Yamhill County statistics: History -- Civil government -- Population -- Climate -- Transportation -- Flood control -- Bank protection -- Land use -- Drainage --...
General statistics of Willamette Basin Project -- Benton County statistics: History -- Civil government -- Miscellaneous -- Population -- Precipitation -- Run-off records -- Flood control -- Bank protection --...
General statistics of Willamette Basin Project -- Lane County statistics: History -- Civil government -- Population -- Climate -- Transportation -- Flood control -- Bank protection -- Land use -- Drainage --...
General statistics of Willamette Basin Project -- Marion County statistics: History -- Civil government -- Population -- Climate -- Flood control -- Bank protection -- Land use -- Soil conservation districts --...
General statistics of Willamette Basin Project -- Clackamas County statistics: History -- Civil government -- Population -- Climate -- Transportation -- Flood control -- Bank protection -- Land use -- Drainage...
General statistics of Willamette Basin Project -- Clackamas County statistics: History -- Civil government -- Population -- Climate -- Transportation -- Flood control -- Land use -- Drainage -- Irrigation --...