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• 1. [Image] Oregon, Crater Lake National Park and vicinity: 25 minute series

  	1 map:col.; Wallis provides a color key for Rogue, Klamath, Umqua, and Lake drainage; Relief shown by contours, spot heights and shading; Datum is mean sea level; Contour interval 50 feet; "N4242-W12155/25;" ...
  	Citation × Citation Citation Abstract Copy Title: Oregon, Crater Lake National Park and vicinity: 25 minute series Author: Geological Survey (U.S.) Year: 1946, 2008, 2009 1 map:col.; Wallis provides a color key for Rogue, Klamath, Umqua, and Lake drainage; Relief shown by contours, spot heights and shading; Datum is mean sea level; Contour interval 50 feet; "N4242-W12155/25;" Includes bibliographic references (leaves 118- 120) Title: Oregon, Crater Lake National Park and vicinity: 25 minute series Author: Geological Survey (U.S.) Year: 1946, 2008, 2009 1 map:col.; Wallis provides a color key for Rogue, Klamath, Umqua, and Lake drainage; Relief shown by contours, spot heights and shading; Datum is mean sea level; Contour interval 50 feet; "N4242-W12155/25;" Includes bibliographic references (leaves 118- 120) Close

• 2. [Image] Oregon Willamette Valley, sheet no. 5; Historic topo[topographic] map of the Willamette Valley

  	Surveyed in 1911. Contour interval 5 feet. Scale 1/31680
  	Citation × Citation Citation Abstract Copy Title: Oregon Willamette Valley, sheet no. 5; Historic topo[topographic] map of the Willamette Valley Author: Geological Survey (U.S.) Year: 1911 Surveyed in 1911. Contour interval 5 feet. Scale 1/31680 Title: Oregon Willamette Valley, sheet no. 5; Historic topo[topographic] map of the Willamette Valley Author: Geological Survey (U.S.) Year: 1911 Surveyed in 1911. Contour interval 5 feet. Scale 1/31680 Close

• 3. [Image] Oregon Willamette Valley, sheet no. 4; Historic topo[topographic] map of the Willamette Valley

  	Surveyed in 1910. Contour interval 5 feet. Scale 1/31680
  	Citation × Citation Citation Abstract Copy Title: Oregon Willamette Valley, sheet no. 4; Historic topo[topographic] map of the Willamette Valley Author: Geological Survey (U.S.) Year: 1911 Surveyed in 1910. Contour interval 5 feet. Scale 1/31680 Title: Oregon Willamette Valley, sheet no. 4; Historic topo[topographic] map of the Willamette Valley Author: Geological Survey (U.S.) Year: 1911 Surveyed in 1910. Contour interval 5 feet. Scale 1/31680 Close

• 4. [Image] Oregon Willamette Valley, sheet no. 7; Historic topo[topographic] map of the Willamette Valley

  	Surveyed in 1911-1912 and 1913. Contour interval 5 feet. Scale 1/31680
  	Citation × Citation Citation Abstract Copy Title: Oregon Willamette Valley, sheet no. 7; Historic topo[topographic] map of the Willamette Valley Author: Geological Survey (U.S.) Year: 1916 Surveyed in 1911-1912 and 1913. Contour interval 5 feet. Scale 1/31680 Title: Oregon Willamette Valley, sheet no. 7; Historic topo[topographic] map of the Willamette Valley Author: Geological Survey (U.S.) Year: 1916 Surveyed in 1911-1912 and 1913. Contour interval 5 feet. Scale 1/31680 Close

• 5. [Image] Oregon Willamette Valley, sheet no. 6; Historic topo[topographic] map of the Willamette Valley

  	Surveyed in 1909-1911. Contour interval 5 feet. Scale 1/31680
  	Citation × Citation Citation Abstract Copy Title: Oregon Willamette Valley, sheet no. 6; Historic topo[topographic] map of the Willamette Valley Author: Geological Survey (U.S.) Year: 1911 Surveyed in 1909-1911. Contour interval 5 feet. Scale 1/31680 Title: Oregon Willamette Valley, sheet no. 6; Historic topo[topographic] map of the Willamette Valley Author: Geological Survey (U.S.) Year: 1911 Surveyed in 1909-1911. Contour interval 5 feet. Scale 1/31680 Close

• 6. [Image] Oregon Willamette Valley, sheet no. 8; Historic topo[topographic] map of the Willamette Valley

  	Surveyed in 1911 and 1914.
  	Citation × Citation Citation Abstract Copy Title: Oregon Willamette Valley, sheet no. 8; Historic topo[topographic] map of the Willamette Valley Author: Geological Survey (U.S.) Year: 1911 Surveyed in 1911 and 1914. Title: Oregon Willamette Valley, sheet no. 8; Historic topo[topographic] map of the Willamette Valley Author: Geological Survey (U.S.) Year: 1911 Surveyed in 1911 and 1914. Close

• 7. [Image] Oregon Willamette Valley, sheet no. 3; Historic topo[topographic] map of the Willamette Valley

  	Surveyed in 1908 and 1909. Contour interval 5 feet. Scale 1/31680
  	Citation × Citation Citation Abstract Copy Title: Oregon Willamette Valley, sheet no. 3; Historic topo[topographic] map of the Willamette Valley Author: Geological Survey (U.S.) Year: 1911 Surveyed in 1908 and 1909. Contour interval 5 feet. Scale 1/31680 Title: Oregon Willamette Valley, sheet no. 3; Historic topo[topographic] map of the Willamette Valley Author: Geological Survey (U.S.) Year: 1911 Surveyed in 1908 and 1909. Contour interval 5 feet. Scale 1/31680 Close

• 8. [Image] Oregon Willamette Valley, sheet no. 2; Historic topo[topographic] map of the Willamette Valley

  	Surveyed in 1908 and 1909. Contour interval 5 feet and 10 feet changing on the 450 foot contour. Scale 1/31680
  	Citation × Citation Citation Abstract Copy Title: Oregon Willamette Valley, sheet no. 2; Historic topo[topographic] map of the Willamette Valley Author: Geological Survey (U.S.) Year: 1911 Surveyed in 1908 and 1909. Contour interval 5 feet and 10 feet changing on the 450 foot contour. Scale 1/31680 Title: Oregon Willamette Valley, sheet no. 2; Historic topo[topographic] map of the Willamette Valley Author: Geological Survey (U.S.) Year: 1911 Surveyed in 1908 and 1909. Contour interval 5 feet and 10 feet changing on the 450 foot contour. Scale 1/31680 Close

• 9. [Image] Oregon Willamette Valley, sheet no. 9; Historic topo[topographic] map of the Willamette Valley

  	Surveyed in 1913 and 1914. Contour interval 5 feet and 25 feet, changing on the 450 foot contour. Scale 1/31680
  	Citation × Citation Citation Abstract Copy Title: Oregon Willamette Valley, sheet no. 9; Historic topo[topographic] map of the Willamette Valley Author: Geological Survey (U.S.) Year: 1919 Surveyed in 1913 and 1914. Contour interval 5 feet and 25 feet, changing on the 450 foot contour. Scale 1/31680 Title: Oregon Willamette Valley, sheet no. 9; Historic topo[topographic] map of the Willamette Valley Author: Geological Survey (U.S.) Year: 1919 Surveyed in 1913 and 1914. Contour interval 5 feet and 25 feet, changing on the 450 foot contour. Scale 1/31680 Close

• 10. [Image] Forest conditions in the Cascade Range Forest Reserve, Oregon

  	Subject series H. Forestry 6
  	Citation × Citation Citation Abstract Copy Title: Forest conditions in the Cascade Range Forest Reserve, Oregon Author: Geological Survey (U.S.) Year: 1903, 2007 Subject series H. Forestry 6 Title: Forest conditions in the Cascade Range Forest Reserve, Oregon Author: Geological Survey (U.S.) Year: 1903, 2007 Subject series H. Forestry 6 Close