Results for "Smithsonian Institution. Environmental Sciences Program"
![Robert Ridgway (1850-1929), 1920, Smithsonian Institution Archives, SIA Acc. 90-105 [SIA2009-2278].](/sites/default/files/styles/sia-image-200/public/site_util_images/image_missing.jpg "Robert Ridgway (1850-1929), 1920, Smithsonian Institution Archives, SIA Acc. 90-105 [SIA2009-2278].")
Robert Ridgway (1850-1929)
- Date: 1920 1920s
Robert Ridgway
- Date: 1884
- Creator: Unknown
- Creator: Unknown
Robert Ridgway Sitting at a Desk
- Date: c. mid 1890s
- Creator: Unknown
- Creator: Unknown
Portrait of Robert Ridgway (1850-1929)
- Date: 1873 April 1873
- Creator: Ulke Bros
Robert Ridgway (1850-1929)
- Date: 1898 August 10, 1898
Robert Ridgway (1850-1929)
- Date: 1927 Labor Day, 1927
- Creator: Magann, J. W
Robert Ridgway (1850-1929)
- Date: 1873
- Creator: Ulke Brothers
Portrait of Robert Ridgway (1850-1929) in His Office
- Date: 1887 August 1887
- Creator: Unknown
Robert Ridgway Home at 1214 B Street, S.W., Washington, DC
- Date: 1884 August 1884
- Creator: Unknown
Robert Ridgway Home at 1214 B Street, S.W., Washington, DC
- Date: 1884 Circa 1884
- Creator: Unknown
Portrait of Robert Ridgway (1850-1929) and William Brewster (1851-1919)
- Date: 1890 1890s
- Creator: Unknown
Group Portrait of Robert Ridgway, Bradshaw Hall Swales, and Charles Wallace Richmond
- Date: 1928 Before 1928
- Creator: Unknown
![Robert Ridgway (1850-1929), 1920, Smithsonian Institution Archives, SIA Acc. 90-105 [SIA2009-2278].](https://ids.si.edu/ids/iiif/SIA-SIA2009-2278-000001/full/250,/0/default.jpg "Robert Ridgway (1850-1929), 1920, Smithsonian Institution Archives, SIA Acc. 90-105 [SIA2009-2278].")
![Robert Ridgway (1850-1929), 1898, Smithsonian Institution Archives, SIA RU007440 [SIA2008-2291].](https://ids.si.edu/ids/iiif/SIA-SIA2008-2291-000001/full/250,/0/default.jpg "Robert Ridgway (1850-1929), 1898, Smithsonian Institution Archives, SIA RU007440 [SIA2008-2291].")
![Robert Ridgway (1850-1929), 1927, Smithsonian Institution Archives, SIA RU007440 [SIA2008-2290].](https://ids.si.edu/ids/iiif/SIA-SIA2008-2290/full/250,/0/default.jpg "Robert Ridgway (1850-1929), 1927, Smithsonian Institution Archives, SIA RU007440 [SIA2008-2290].")
![Robert Ridgway (1850-1929), 1873, Smithsonian Institution Archives, SIA RU000095 [SIA2008-4347].](https://ids.si.edu/ids/iiif/SIA-SIA2008-4347/full/250,/0/default.jpg "Robert Ridgway (1850-1929), 1873, Smithsonian Institution Archives, SIA RU000095 [SIA2008-4347].")
