Us Geological Survey

Title in lower margin: Kennebec Co., Me. : N4406--W6921.5/38x47, 1978. "Compiled in 1978 from USGS 1:24,000 and 1:62,500-scale topographic maps dated 1956-1970." "Planimetry revised from aerial photographs take More

Significance: The Arco Naval Proving Ground (NPG) was one of five specialized ordnance facilities established in the United States during World War II to support ordnance testing and research and experiments re More

Significance: The Arco Naval Proving Ground (NPG) was one of five specialized ordnance facilities established in the United States during World War II to support ordnance testing and research and experiments re More

Significance: The Arco Naval Proving Ground (NPG) was one of five specialized ordnance facilities established in the United States during World War II to support ordnance testing and research and experiments re More

Significance: The Arco Naval Proving Ground (NPG) was one of five specialized ordnance facilities established in the United States during World War II to support ordnance testing and research and experiments re More

Significance: The Arco Naval Proving Ground (NPG) was one of five specialized ordnance facilities established in the United States during World War II to support ordnance testing and research and experiments re More

Significance: The Arco Naval Proving Ground (NPG) was one of five specialized ordnance facilities established in the United States during World War II to support ordnance testing and research and experiments re More

Significance: The Arco Naval Proving Ground (NPG) was one of five specialized ordnance facilities established in the United States during World War II to support ordnance testing and research and experiments re More

Significance: The Arco Naval Proving Ground (NPG) was one of five specialized ordnance facilities established in the United States during World War II to support ordnance testing and research and experiments re More

Significance: The Arco Naval Proving Ground (NPG) was one of five specialized ordnance facilities established in the United States during World War II to support ordnance testing and research and experiments re More

Significance: The Arco Naval Proving Ground (NPG) was one of five specialized ordnance facilities established in the United States during World War II to support ordnance testing and research and experiments re More

Significance: The Arco Naval Proving Ground (NPG) was one of five specialized ordnance facilities established in the United States during World War II to support ordnance testing and research and experiments re More

Significance: The Arco Naval Proving Ground (NPG) was one of five specialized ordnance facilities established in the United States during World War II to support ordnance testing and research and experiments re More

Significance: The Arco Naval Proving Ground (NPG) was one of five specialized ordnance facilities established in the United States during World War II to support ordnance testing and research and experiments re More

Significance: The Hawaii Volcanoes National Park road system provides access to active volcanoes and related landscapes along with varied ecosystems and archaeological sites. It represents the traditional NPS More

Significance: The Hawaii Volcanoes National Park road system provides access to active volcanoes and related landscapes along with varied ecosystems and archaeological sites. It represents the traditional NPS More

Significance: The Hawaii Volcanoes National Park road system provides access to active volcanoes and related landscapes along with varied ecosystems and archaeological sites. It represents the traditional NPS More

Significance: The Hawaii Volcanoes National Park road system provides access to active volcanoes and related landscapes along with varied ecosystems and archaeological sites. It represents the traditional NPS More

Significance: The Hawaii Volcanoes National Park road system provides access to active volcanoes and related landscapes along with varied ecosystems and archaeological sites. It represents the traditional NPS More

Significance: The Hawaii Volcanoes National Park road system provides access to active volcanoes and related landscapes along with varied ecosystems and archaeological sites. It represents the traditional NPS More

Significance: The Hawaii Volcanoes National Park road system provides access to active volcanoes and related landscapes along with varied ecosystems and archaeological sites. It represents the traditional NPS More

Significance: The completion of this 1,035' span was the last section of a larger project to improve U.S. Highway 29 across South Carolina. The structure is unusual because of its skewed through truss spans. More

Significance: The completion of this 1,035' span was the last section of a larger project to improve U.S. Highway 29 across South Carolina. The structure is unusual because of its skewed through truss spans. More

Significance: The completion of this 1,035' span was the last section of a larger project to improve U.S. Highway 29 across South Carolina. The structure is unusual because of its skewed through truss spans. More

Significance: The completion of this 1,035' span was the last section of a larger project to improve U.S. Highway 29 across South Carolina. The structure is unusual because of its skewed through truss spans. More

Significance: The completion of this 1,035' span was the last section of a larger project to improve U.S. Highway 29 across South Carolina. The structure is unusual because of its skewed through truss spans. More

Significance: The completion of this 1,035' span was the last section of a larger project to improve U.S. Highway 29 across South Carolina. The structure is unusual because of its skewed through truss spans. More

Significance: The completion of this 1,035' span was the last section of a larger project to improve U.S. Highway 29 across South Carolina. The structure is unusual because of its skewed through truss spans. More

Significance: The completion of this 1,035' span was the last section of a larger project to improve U.S. Highway 29 across South Carolina. The structure is unusual because of its skewed through truss spans. More

Significance: The completion of this 1,035' span was the last section of a larger project to improve U.S. Highway 29 across South Carolina. The structure is unusual because of its skewed through truss spans. More

Significance: The completion of this 1,035' span was the last section of a larger project to improve U.S. Highway 29 across South Carolina. The structure is unusual because of its skewed through truss spans. More

Significance: The completion of this 1,035' span was the last section of a larger project to improve U.S. Highway 29 across South Carolina. The structure is unusual because of its skewed through truss spans. More

Significance: The completion of this 1,035' span was the last section of a larger project to improve U.S. Highway 29 across South Carolina. The structure is unusual because of its skewed through truss spans. More

Significance: The completion of this 1,035' span was the last section of a larger project to improve U.S. Highway 29 across South Carolina. The structure is unusual because of its skewed through truss spans. More

Significance: The completion of this 1,035' span was the last section of a larger project to improve U.S. Highway 29 across South Carolina. The structure is unusual because of its skewed through truss spans. More

Significance: The completion of this 1,035' span was the last section of a larger project to improve U.S. Highway 29 across South Carolina. The structure is unusual because of its skewed through truss spans. More

Significance: The completion of this 1,035' span was the last section of a larger project to improve U.S. Highway 29 across South Carolina. The structure is unusual because of its skewed through truss spans. More

Significance: The completion of this 1,035' span was the last section of a larger project to improve U.S. Highway 29 across South Carolina. The structure is unusual because of its skewed through truss spans. More

Significance: The completion of this 1,035' span was the last section of a larger project to improve U.S. Highway 29 across South Carolina. The structure is unusual because of its skewed through truss spans. More

Significance: The completion of this 1,035' span was the last section of a larger project to improve U.S. Highway 29 across South Carolina. The structure is unusual because of its skewed through truss spans. More

Significance: The completion of this 1,035' span was the last section of a larger project to improve U.S. Highway 29 across South Carolina. The structure is unusual because of its skewed through truss spans. More

Significance: The completion of this 1,035' span was the last section of a larger project to improve U.S. Highway 29 across South Carolina. The structure is unusual because of its skewed through truss spans. More

Significance: The completion of this 1,035' span was the last section of a larger project to improve U.S. Highway 29 across South Carolina. The structure is unusual because of its skewed through truss spans. More

Significance: The completion of this 1,035' span was the last section of a larger project to improve U.S. Highway 29 across South Carolina. The structure is unusual because of its skewed through truss spans. More

Significance: The completion of this 1,035' span was the last section of a larger project to improve U.S. Highway 29 across South Carolina. The structure is unusual because of its skewed through truss spans. More

Significance: The temporary building, which was originally a temporary military hospital, became, in 1959, the home of the Rock Magnetics Laboratory and the site of revolutionary research in the field of earth More

Significance: The temporary building, which was originally a temporary military hospital, became, in 1959, the home of the Rock Magnetics Laboratory and the site of revolutionary research in the field of earth More

Significance: The temporary building, which was originally a temporary military hospital, became, in 1959, the home of the Rock Magnetics Laboratory and the site of revolutionary research in the field of earth More

Significance: The temporary building, which was originally a temporary military hospital, became, in 1959, the home of the Rock Magnetics Laboratory and the site of revolutionary research in the field of earth More

Significance: The temporary building, which was originally a temporary military hospital, became, in 1959, the home of the Rock Magnetics Laboratory and the site of revolutionary research in the field of earth More

Significance: The temporary building, which was originally a temporary military hospital, became, in 1959, the home of the Rock Magnetics Laboratory and the site of revolutionary research in the field of earth More

Significance: The temporary building, which was originally a temporary military hospital, became, in 1959, the home of the Rock Magnetics Laboratory and the site of revolutionary research in the field of earth More

Significance: The temporary building, which was originally a temporary military hospital, became, in 1959, the home of the Rock Magnetics Laboratory and the site of revolutionary research in the field of earth More

Significance: The temporary building, which was originally a temporary military hospital, became, in 1959, the home of the Rock Magnetics Laboratory and the site of revolutionary research in the field of earth More

Significance: The temporary building, which was originally a temporary military hospital, became, in 1959, the home of the Rock Magnetics Laboratory and the site of revolutionary research in the field of earth More

Significance: The temporary building, which was originally a temporary military hospital, became, in 1959, the home of the Rock Magnetics Laboratory and the site of revolutionary research in the field of earth More

Significance: The temporary building, which was originally a temporary military hospital, became, in 1959, the home of the Rock Magnetics Laboratory and the site of revolutionary research in the field of earth More

Significance: The temporary building, which was originally a temporary military hospital, became, in 1959, the home of the Rock Magnetics Laboratory and the site of revolutionary research in the field of earth More

Significance: The temporary building, which was originally a temporary military hospital, became, in 1959, the home of the Rock Magnetics Laboratory and the site of revolutionary research in the field of earth More

Significance: The temporary building, which was originally a temporary military hospital, became, in 1959, the home of the Rock Magnetics Laboratory and the site of revolutionary research in the field of earth More

Significance: The temporary building, which was originally a temporary military hospital, became, in 1959, the home of the Rock Magnetics Laboratory and the site of revolutionary research in the field of earth More

Significance: The temporary building, which was originally a temporary military hospital, became, in 1959, the home of the Rock Magnetics Laboratory and the site of revolutionary research in the field of earth More

Significance: The temporary building, which was originally a temporary military hospital, became, in 1959, the home of the Rock Magnetics Laboratory and the site of revolutionary research in the field of earth More

Significance: The temporary building, which was originally a temporary military hospital, became, in 1959, the home of the Rock Magnetics Laboratory and the site of revolutionary research in the field of earth More

Significance: The temporary building, which was originally a temporary military hospital, became, in 1959, the home of the Rock Magnetics Laboratory and the site of revolutionary research in the field of earth More

Significance: The temporary building, which was originally a temporary military hospital, became, in 1959, the home of the Rock Magnetics Laboratory and the site of revolutionary research in the field of earth More

Significance: The temporary building, which was originally a temporary military hospital, became, in 1959, the home of the Rock Magnetics Laboratory and the site of revolutionary research in the field of earth More

Significance: The temporary building, which was originally a temporary military hospital, became, in 1959, the home of the Rock Magnetics Laboratory and the site of revolutionary research in the field of earth More

Significance: The temporary building, which was originally a temporary military hospital, became, in 1959, the home of the Rock Magnetics Laboratory and the site of revolutionary research in the field of earth More

Significance: The temporary building, which was originally a temporary military hospital, became, in 1959, the home of the Rock Magnetics Laboratory and the site of revolutionary research in the field of earth More

Significance: The temporary building, which was originally a temporary military hospital, became, in 1959, the home of the Rock Magnetics Laboratory and the site of revolutionary research in the field of earth More

Significance: The temporary building, which was originally a temporary military hospital, became, in 1959, the home of the Rock Magnetics Laboratory and the site of revolutionary research in the field of earth More

Significance: The temporary building, which was originally a temporary military hospital, became, in 1959, the home of the Rock Magnetics Laboratory and the site of revolutionary research in the field of earth More

Significance: The temporary building, which was originally a temporary military hospital, became, in 1959, the home of the Rock Magnetics Laboratory and the site of revolutionary research in the field of earth More

Significance: The temporary building, which was originally a temporary military hospital, became, in 1959, the home of the Rock Magnetics Laboratory and the site of revolutionary research in the field of earth More

Significance: The temporary building, which was originally a temporary military hospital, became, in 1959, the home of the Rock Magnetics Laboratory and the site of revolutionary research in the field of earth More

Significance: The temporary building, which was originally a temporary military hospital, became, in 1959, the home of the Rock Magnetics Laboratory and the site of revolutionary research in the field of earth More

Significance: The temporary building, which was originally a temporary military hospital, became, in 1959, the home of the Rock Magnetics Laboratory and the site of revolutionary research in the field of earth More

Significance: The temporary building, which was originally a temporary military hospital, became, in 1959, the home of the Rock Magnetics Laboratory and the site of revolutionary research in the field of earth More

Significance: The temporary building, which was originally a temporary military hospital, became, in 1959, the home of the Rock Magnetics Laboratory and the site of revolutionary research in the field of earth More

Significance: The temporary building, which was originally a temporary military hospital, became, in 1959, the home of the Rock Magnetics Laboratory and the site of revolutionary research in the field of earth More