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- Reed, Thomas B. (Thomas Brackett) 1839-1902 1824 downloads
- Ball, W. P. (William Platt) 1844-1917 1818 downloads
- Fantham, Harold Benjamin 1876-1937 1816 downloads
- Braun, Max 1850-1930 1816 downloads
- Bache, Constance 1846-1903 1815 downloads
- Newby, Gregory B. 1965-2025 1814 downloads
- Cocker, B. F. (Benjamin Franklin) 1821-1883 1813 downloads
- Somadeva Bhatta, active 11th century - 1813 downloads
- Conway, William Martin, Sir 1856-1937 1808 downloads
- Burnham, Margaret - 1807 downloads
- Illinois State Geological Survey - 1803 downloads
- Brangwyn, Frank 1867-1956 1799 downloads
- Bennett, E. N. (Ernest Nathaniel), Sir 1868-1947 1799 downloads
- Rittenhouse, Jessie Belle 1869-1948 1796 downloads
- Bland, Hubert 1856-1914 1795 downloads
- English, George Bethune 1787-1828 1794 downloads
- Baldridge, Cyrus Leroy 1889-1977 1792 downloads
- Birnbaum, Max 1862- 1788 downloads
- Brendecke, Fr. (Friedrich) - 1788 downloads
- Barker, W. H. (William Henry) 1882-1929 1788 downloads
- Flach, Pauline Bancroft 1869-1966 1788 downloads
- Bradley, A. G. (Arthur Granville) 1850-1943 1784 downloads
- Blore, George Henry 1870-1960 1784 downloads
- Bancroft, Caroline 1900-1985 1782 downloads
- Le Beau, Charles 1701-1778 1782 downloads