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Primary view of Abilene Sheet
Geological Survey (U.S.)
1916
Primary view of Addicks Quadrangle
Geological Survey (U.S.)
1915
Primary view of Addicks Quadrangle
Geological Survey (U.S.)
1915
Primary view of Addicks Quadrangle
Geological Survey (U.S.)
1918
Primary view of Addington Sheet
Geological Survey (U.S.)
1916
Primary view of Adjustable Light Shade and Reflector.
Spivey, Lillian Hale
March 7, 1911
Primary view of Aerating-Churn.
Wailes, William S. H.
March 4, 1913
Primary view of Aerial Navigating Apparatus.
Flanagan, Henry.
July 25, 1911
Primary view of Agua Fria Quadrangle
United States. Army. Corps of Engineers.
1917
Primary view of Albany Sheet
Geological Survey (U.S.)
1916
Primary view of Aldine Quadrangle
Geological Survey (U.S.)
1916
Primary view of Aldine Quadrangle
Geological Survey (U.S.)
1916
Primary view of Aldine Quadrangle
Geological Survey (U.S.)
1919
Primary view of Alief Quadrangle
Geological Survey (U.S.)
1915
Primary view of Alief Quadrangle
Geological Survey (U.S.)
1915
Primary view of Almeda Quadrangle
Geological Survey (U.S.)
1915
Primary view of Almeda Quadrangle
Geological Survey (U.S.)
1915
Primary view of Alpine Sheet
Geological Survey (U.S.)
1916
Primary view of Animal-Trap
Link, William A
January 14, 1913
Primary view of Anson Sheet
Geological Survey (U.S.)
1915
Primary view of Atlanta Quadrangle
Geological Survey (U.S.)
1910
Primary view of Attachment for Harrows
Taylor, David T. & Barker, Felix
March 11, 1913
Primary view of Austin Sheet
Geological Survey (U.S.)
1910
Primary view of Ballinger Sheet
Geological Survey (U.S.)
1917