Lee, Willis Thomas (1864-1926) United States of America. Geological Survey.
Lee, Willis Thomas (1864-1926) Stone, Ralph Walter (1876-1964) Gale, Hoyt Stoddard (1876-1952) United States of America. Geological Survey.
Lee, Willis Thomas (1864-1926) Stany Zjednoczone. Geological Survey
Lee, Willis Thomas (1864-1926) Stany Zjednoczone. Geological Survey
Lee, Willis Thomas (1864-1926) Stany Zjednoczone. Geological Survey