1926. Geological Survey (U.S.). Relief shown by contours and spot heights ; contour interval on land 20 ft. ; contour interval on river surface 5 ft.; "Surveyed in 1925."; Vertica... The Survey (Washington).
    
  
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      1926. Geological Survey (U.S.). Relief shown by contours and spot heights.; "Surveyed in 1924-5."; Vertical scale of profiles 1 in. = 40 ft.; Includes "Key map of plan sheets" on ... The Survey (Washington).
    
  
    
      1927. Geological Survey (U.S.). Relief shown by contours and spot heights.; "Surveyed in 1924."; "Topography by R.W. Burchard."; "Datum is mean sea level."; Sheets include townshi... Dept. of the Interior,  U.S. Geological Survey (Washington,  D.C).
    
  
    
      1925. Geological Survey (U.S.). Relief shown by contours and spot heights ; contour interval on land 20 ft. ; contour interval on river surface 5 ft.; Survey dates: 1921 and 1923.... The Survey (Washington).
    
  
    
      1926. Geological Survey (U.S.). Relief shown by contours and spot heights.; "Surveyed in 1914 and 1924."; Topography also done by R.B. Kilgore.; Vertical scale of profiles 1 in. =... The Survey (Washington).
    
  
    
      1927. Geological Survey (U.S.). Relief shown by contours and spot heights.; "5 plan sheets."; Includes "Key map of plan sheets" on each sheet."."; Includes inset "Albany Falls dam... The Survey (Washington).
    
  
    
      2004. Instituto Nacional de Estadística, Geografía e Informática (Mexico), Geological Survey (U.S.), and Canada Centre for Remote Sensing. This polygon shapefile depicts the political boundaries of North America, including: international boundaries, provincial boundaries, state or terr... Geological Survey (U.S.).
    
  
    
      2004. Instituto Nacional de Estadística, Geografía e Informática (Mexico), Geological Survey (U.S.), and Canada Centre for Remote Sensing. This line shapefile depicts the political boundaries of North America, including: international boundaries, provincial boundaries, state or territo... Geological Survey (U.S.).
    
  
    
      2010. Geological Survey (U.S.) and United States. Bureau of Transportation Statistics. This point shapefile depicts cities and towns in the United States, Puerto Rico, and the United States Virgin Islands. A city or town is a place wi... United States. Bureau of Transportation Statistics.
    
  
    
      2004. Geological Survey (U.S.), Instituto Nacional de Estadística, Geografía e Informática (Mexico), and Canada Centre for Remote Sensing. A joint venture involving the National Atlas programs in Canada (Natural Resources Canada), Mexico (Instituto Nacional de Estadística Geografía e I... Geological Survey (U.S.).