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1. [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

2. [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

3. [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

4. [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

5. [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.

6. [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

7. [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

8. [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