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USDA Forest Service: 1965. Rounding up cattle to test for possible effects DDT spray. Douglas-fir tussock moth control project. Altnow Ranch. Harney County, Oregon.
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USDA Forest Service: 1965. Joe Altnow and friend. Evaluating cattle for DDT. Douglas-fir tussock moth control project. Altnow Ranch. Harney County, Oregon.
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USDA Forest Service: 1965. Evaluating cattle for DDT. Douglas-fir tussock moth control project. USFS photographer Jim Hughes in red vest on the right. Altnow Ranch. Harney County, Oregon.
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USDA Forest Service: 1965. Evaluating cattle for DDT. Douglas-fir tussock moth control project. Altnow Ranch. Burns, Oregon.
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USDA Forest Service: 1965. Cattle evaluation. DDT monitoring. Douglas-fir tussock moth control project. Altnow Ranch. Burns, Oregon.
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USDA Forest Service: 1965. USFS photographer Jim Hughes on fence. Cattle evaluation for DDT. Douglas-fir tussock moth control project. Altnow Ranch. Burns, Oregon.
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USDA Forest Service: 1965. Joe Altnow. Monitoring cattle for DDT. Douglas-fir tussock moth control project. Altnow Ranch. Burns, Oregon.
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USDA Forest Service: 1965. Monitoring cattle tissue for DDT. Douglas-fir tussock moth control project. Altnow Ranch. Harney County, Oregon.
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USDA Forest Service: 1965. USFS photographer James W. Hughes (on corral fence), during cattle DDT evaluation. Douglas-fir tussock moth control project. Altnow Ranch. Harney County, Oregon.