Results for "Smithsonian Institution. Environmental Sciences Program"

1. Collection

   S. Dillon Ripley Papers, 1913-1993 and undated, with related materials from 1807, 1871-1891

   • Date: 1807 1807-1993 1913-1993 and undated, with related materials from 1807, 1871-1891
   • Creator: Ripley, S. Dillon (Sidney Dillon) 1913-2001

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3. 

   Portrait of Robert Ridgway (1850-1929) and William Brewster (1851-1919)

   • Date: 1890 1890s
   • Creator: Unknown

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5. 

   Group Portrait of Robert Ridgway, Bradshaw Hall Swales, and Charles Wallace Richmond

   • Date: 1928 Before 1928
   • Creator: Unknown

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