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  1. By: Ridgway, Robert, - Friedmann, Herbert,
    Publication info: Washington :Govt. Print. Off.,1901-
    Holding Institution: Cornell University Library
  2. By: Ridgway, Robert, - Friedmann, Herbert,
    Publication info: Washington,Govt. Print. Off.,1901-
    Holding Institution: Boston College Libraries (archive.org)
  3. By: Ridgway, Robert,
    Publication info: Washington :Government Printing Office,1901-
    Holding Institution: Internet Archive
  4. By: Knowlton, Frank Hall, - Ridgway, Robert, - Lucas, Frederic A. (Frederic Augustus),
    Publication info: New York,Holt,1909.
    Holding Institution: University of California Libraries (archive.org)
  5. By: Ridgway, Robert, - United States National Museum. - Great International Fisheries Exhibition London, England)
    Publication info: Washington :G.P.O.,1883.
    Holding Institution: Smithsonian Libraries
  6. By: Ridgway, Robert,
    Publication info: Washington, D.C. :Published by the author,1912
    Holding Institution: Multiple institutions
  7. By: Ridgway, Robert,
    Holding Institution: Missouri Botanical Garden, Peter H. Raven Library
    BHL Collections: Engelmann Papers, Missouri Botanical Garden
  8. By: Baird, Spencer Fullerton, - Brewer, T. M. (Thomas Mayo), - Ridgway, Robert,
    Publication info: Boston :Little, Brown,1905.
    Holding Institution: Smithsonian Libraries
  9. By: Baird, Spencer Fullerton, - Brewer, T. M. (Thomas Mayo), - Ridgway, Robert,
    Publication info: Boston,Little, Brown,1874.
    Holding Institution: Multiple institutions
  10. By: Ridgway, Robert,
    Publication info: Washington :Govt. Print. Off.,1892.
    Holding Institution: Smithsonian Libraries
  11. By: Ridgway, Robert,
    Holding Institution: Prelinger Library (archive.org)
  12. By: Ridgway, Robert,
    Publication info: Philadelphia :J.B. Lippincott,1887.
    Holding Institution: Canadiana.org (archive.org)
  13. By: Ridgway, Robert,
    Edition: 2d ed.
    Publication info: Philadelphia,J. B. Lippincott Company,1896.
    Holding Institution: Cornell University Library
  14. By: Ridgway, Robert,
    Publication info: Philadelphia,J. B. Lippincott,1887.
    Holding Institution: Cornell University Library
  15. By: Ridgway, Robert,
    Publication info: Philadelphia,Lippincott,1887.
    Holding Institution: University of Toronto - Gerstein Science Information Centre
  16. By: Ridgway, Robert,
    Edition: 4th ed.
    Publication info: Philadelphia :J.B. Lippincott Co.,1900.
    Holding Institution: University Library, University of Illinois Urbana Champaign
  17. By: Ridgway, Robert,
    Edition: 2d ed.
    Publication info: Philadelphia,J. B. Lippincott company,1896.
    Holding Institution: American Museum of Natural History Library
  18. By: Ridgway, Robert,
    Publication info: Philadelphia,J. B. Lippincott Company,1887.
    Holding Institution: American Museum of Natural History Library
  19. By: Ridgway, Robert,
    Publication info: Boston :Little, Brown, and Company,1886.
    Holding Institution: Smithsonian Libraries
  20. By: Ridgway, Robert, - John Wilson and Son,
    Publication info: Boston :Little, Brown and Company,1886.
    Holding Institution: Research Library, The Getty Research Institute (archive.org)
  21. By: Ridgway, Robert,
    Publication info: Washington,Govt. Print. Off.,1881.
    Holding Institution: Cornell University Library
  22. By: Nehrling, Henry, - Ridgway, Robert,
    Publication info: Milwaukee, Wis. :G. Brumber,1891.
    Holding Institution: Smithsonian Libraries
  23. By: Nehrling, Henry, - Ridgway, Robert,
    Publication info: Milwaukee, Wis.,G. Brumder[1889]-91.
    Holding Institution: American Museum of Natural History Library
  24. By: Ridgway, Robert, - Benedict, James E. (James Everard) - Nye, W.
    Holding Institution: Smithsonian Libraries
  25. By: Thompson, Mary Emma (Dartt), - Coues, Elliott, - Ridgway, Robert,
    Publication info: Philadelphia :Claxton, Remsen & Haffelfinger,1879 [c1878]
    Holding Institution: Smithsonian Libraries
  26. By: Ridgway, Robert,
    Holding Institution: Harvard University, Museum of Comparative Zoology, Ernst Mayr Library
  27. By: Ridgway, Robert, - Forbes, Stephen Alfred,
    Publication info: Springfield, Ill.,H.W. Rokker, printer,1889-1895.
    Holding Institution: American Museum of Natural History Library
  28. By: Ridgway, Robert,
    Publication info: Springfield, Ill. :H.W. Rokker, printer,1889-95.
    Holding Institution: University Library, University of Illinois Urbana Champaign
  29. By: Ridgway, Robert,
    Publication info: Springfield, Ill. :H. W. Rokker, printer,1889-95.
    Holding Institution: University of California Libraries (archive.org)
  30. By: Ridgway, Robert,
    Publication info: Springfield, Ill.,H. W. Rokker, printer,1889-95.
    Holding Institution: MBLWHOI Library
  31. By: Ridgway, Robert, - Illinois. Natural History Survey Division.
    Publication info: Springfield, Ill.,H. W. Rokker, Printer,1889-95.
    Holding Institution: Cornell University Library
  32. By: Ridgway, Robert,
    Publication info: Washington,Govt. Print. Off.,1875.
    Holding Institution: Cornell University Library
  33. By: Baird, Spencer Fullerton, - Ridgway, Robert, - Baird, Spencer Fullerton,
    Publication info: Boston :Little, Brown,1873 [i.e. 1874]
    Holding Institution: Smithsonian Libraries
  34. By: Meek, F. B. (Fielding Bradford), - Hall, James, - Whitfield, Robert Parr, - Ridgway, Robert,
    Publication info: Washington,Govt. print. off.,1877.
    Holding Institution: Smithsonian Libraries
  35. By: United States Geological Exploration of the Fortieth Parallel - Bien, Julius, - Eaton, Daniel Cady, - Emmons, Samuel Franklin, - Hague, A. (Arnold), - Hague, James D. (James Duncan), - Hall, James, - King, Clarence, - Meek, F. B. (Fielding Bradford), - Ridgway, Robert, - Watson, Sereno, - Whitfield, R. P. - Whitfield, R. P.
    Publication info: Washington, D.C. :G.P.O.,1870-80
    Holding Institution: Multiple institutions
  36. By: Ridgway, Robert,
    Holding Institution: Harvard University, Museum of Comparative Zoology, Ernst Mayr Library
  37. By: Baird, Spencer Fullerton, - Brewer, T. M. (Thomas Mayo), - Ridgway, Robert,
    Publication info: Boston,Little, Brown, and Company,1884.
    Holding Institution: Smithsonian Libraries
  1. By: Ridgway, Robert,
    Type: Article
    In: Proceedings of the United States National Museum.
    Volume: 17
    Issue: 1010
    Date: 1895
    Page Range: 409--421
    Publication info: Washington :Smithsonian Institution Press, [etc.]
  2. By: Ridgway, Robert,
    Type: Article
    In: The Auk.
    Volume: 1
    Date: 1884
    Page Range: 389--389
    Publication info: Washington, D.C. :American Ornithologists' Union, etc.,1884-
  3. By: Baird, Spencer Fullerton, - Brewer, T. M. (Thomas Mayo), - Ridgway, Robert,
    Type: Article
    In: The Auk.
    Volume: 1
    Date: 1884
    Page Range: 382--386
    Publication info: Washington, D.C. :American Ornithologists' Union, etc.,1884-
  4. By: Belding, L - Ridgway, Robert,
    Type: Article
    In: The Auk.
    Volume: 1
    Date: 1884
    Page Range: 83--84
    Publication info: Washington, D.C. :American Ornithologists' Union, etc.,1884-
  5. By: Belding, L - Ridgway, Robert,
    Type: Article
    In: The Auk.
    Volume: 1
    Date: 1884
    Page Range: 83--84
    Publication info: Washington, D.C. :American Ornithologists' Union, etc.,1884-
  6. By: Ridgway, Robert,
    Type: Article
    In: Bulletin - United States National Museum.
    Date: 1907
    Publication info: Washington :Smithsonian Institution Press, [etc.];1877-1971.
  7. By: Ridgway, Robert,
    Type: Article
    In: Proceedings of the United States National Museum.
    Volume: 19
    Issue: 1116
    Date: 1897
    Page Range: 459--670
    Publication info: Washington :Smithsonian Institution Press, [etc.]
  8. By: Ridgway, Robert,
    Type: Article
    In: The Auk.
    Volume: 7
    Date: 1890
    Page Range: 90--91
    Publication info: Washington, D.C. :American Ornithologists' Union, etc.,1884-
  9. By: Ridgway, Robert,
    Type: Article
    In: Proceedings of the United States National Museum.
    Volume: 10
    Issue: 665
    Date: 1888
    Page Range: 572--597
    Publication info: Washington :Smithsonian Institution Press, [etc.]
  10. By: Ridgway, Robert,
    Type: Article
    In: Proceedings of the United States National Museum.
    Volume: 8
    Issue: 539
    Date: 1885
    Page Range: 560--583
    Publication info: Washington :Smithsonian Institution Press, [etc.]
  11. By: Ridgway, Robert,
    Type: Article
    In: Proceedings of the United States National Museum.
    Volume: 3
    Issue: 138
    Date: 1880
    Page Range: 163--246
    Publication info: Washington :Smithsonian Institution Press, [etc.]
  12. By: Ridgway, Robert,
    Type: Article
    In: Proceedings of the United States National Museum.
    Volume: 18
    Issue: 1076
    Date: 1896
    Page Range: 449--450
    Publication info: Washington :Smithsonian Institution Press, [etc.]
  13. By: Ridgway, Robert,
    Type: Article
    In: The Auk.
    Volume: 11
    Date: 1894
    Page Range: 324--325
    Publication info: Washington, D.C. :American Ornithologists' Union, etc.,1884-
  14. By: Ridgway, Robert,
    Type: Article
    In: The Auk.
    Volume: 27
    Date: 1910
    Page Range: 88--88
    Publication info: Washington, D.C. :American Ornithologists' Union, etc.,1884-
  15. By: Ridgway, Robert,
    Type: Article
    In: The Auk.
    Volume: 14
    Date: 1897
    Page Range: 95--95
    Publication info: Washington, D.C. :American Ornithologists' Union, etc.,1884-
  16. By: Ridgway, Robert,
    Type: Article
    In: Proceedings of the United States National Museum.
    Volume: 9
    Issue: 567
    Date: 1886
    Page Range: 248--249
    Publication info: Washington :Smithsonian Institution Press, [etc.]
  17. By: Ridgway, Robert,
    Type: Article
    In: Proceedings of the Biological Society of Washington.
    Volume: 2
    Date: 1880-1886
    Page Range: 95--96
    Publication info: Washington,Biological Society of Washington
  18. By: Ridgway, Robert,
    Type: Article
    In: The Auk.
    Volume: 2
    Date: 1885
    Page Range: 343--345
    Publication info: Washington, D.C. :American Ornithologists' Union, etc.,1884-
  19. By: Ridgway, Robert,
    Type: Article
    In: Proceedings of the United States National Museum.
    Volume: 4
    Issue: 236
    Date: 1882
    Page Range: 337--338
    Publication info: Washington :Smithsonian Institution Press, [etc.]
  20. By: Ridgway, Robert,
    Type: Article
    In: The Auk.
    Volume: 3
    Date: 1886
    Page Range: 382--383
    Publication info: Washington, D.C. :American Ornithologists' Union, etc.,1884-
  21. By: Ridgway, Robert,
    Type: Article
    In: Proceedings of the United States National Museum.
    Volume: 16
    Issue: 964
    Date: 1894
    Page Range: 691--692
    Publication info: Washington :Smithsonian Institution Press, [etc.]
  22. By: Ridgway, Robert,
    Type: Article
    In: Proceedings of the United States National Museum.
    Volume: 8
    Issue: 494
    Date: 1885
    Page Range: 94--95
    Publication info: Washington :Smithsonian Institution Press, [etc.]
  23. By: Ridgway, Robert,
    Type: Article
    In: Proceedings of the United States National Museum.
    Volume: 10
    Issue: 617
    Date: 1887
    Page Range: 148--150
    Publication info: Washington :Smithsonian Institution Press, [etc.]
  24. By: Ridgway, Robert,
    Type: Article
    In: Proceedings of the United States National Museum.
    Volume: 7
    Issue: 457
    Date: 1885
    Page Range: 514--515
    Publication info: Washington :Smithsonian Institution Press, [etc.]
  25. By: Ridgway, Robert,
    Type: Article
    In: Proceedings of the United States National Museum.
    Volume: 14
    Issue: 872
    Date: 1891
    Page Range: 483--484
    Publication info: Washington :Smithsonian Institution Press, [etc.]
  26. By: Ridgway, Robert,
    Type: Article
    In: Proceedings of the United States National Museum.
    Volume: 7
    Issue: 412
    Date: 1884
    Page Range: 68--70
    Publication info: Washington :Smithsonian Institution Press, [etc.]
  27. By: Ridgway, Robert,
    Type: Article
    In: Proceedings of the United States National Museum.
    Volume: 8
    Issue: 493
    Date: 1885
    Page Range: 93--94
    Publication info: Washington :Smithsonian Institution Press, [etc.]
  28. By: Ridgway, Robert,
    Type: Article
    In: Proceedings of the United States National Museum.
    Volume: 10
    Issue: 599
    Date: 1887
    Page Range: 1--2
    Publication info: Washington :Smithsonian Institution Press, [etc.]
  29. By: Ridgway, Robert,
    Type: Article
    In: The Auk.
    Volume: 3
    Date: 1886
    Page Range: 333--334
    Publication info: Washington, D.C. :American Ornithologists' Union, etc.,1884-
  30. By: Ridgway, Robert,
    Type: Article
    In: Proceedings of the United States National Museum.
    Volume: 18
    Issue: 1045
    Date: 1896
    Page Range: 119--120
    Publication info: Washington :Smithsonian Institution Press, [etc.]
  31. By: Ridgway, Robert,
    Type: Article
    In: The Auk.
    Volume: 15
    Date: 1898
    Page Range: 325--326
    Publication info: Washington, D.C. :American Ornithologists' Union, etc.,1884-
  32. By: Ridgway, Robert,
    Type: Article
    In: Proceedings of the United States National Museum.
    Volume: 14
    Issue: 867
    Date: 1891
    Page Range: 465--466
    Publication info: Washington :Smithsonian Institution Press, [etc.]
  33. By: Ridgway, Robert,
    Type: Article
    In: Proceedings of the United States National Museum.
    Volume: 16
    Issue: 962
    Date: 1893
    Page Range: 687--688
    Publication info: Washington :Smithsonian Institution Press, [etc.]
  34. By: Ridgway, Robert,
    Type: Article
    In: The Auk.
    Volume: 5
    Date: 1888
    Page Range: 263--263
    Publication info: Washington, D.C. :American Ornithologists' Union, etc.,1884-
  35. By: Ridgway, Robert,
    Type: Article
    In: Proceedings of the United States National Museum.
    Volume: 9
    Issue: 573
    Date: 1887
    Page Range: 325--326
    Publication info: Washington :Smithsonian Institution Press, [etc.]
  36. By: Ridgway, Robert,
    Type: Article
    In: Proceedings of the United States National Museum.
    Volume: 16
    Issue: 945
    Date: 1893
    Page Range: 469--470
    Publication info: Washington :Smithsonian Institution Press, [etc.]
  37. By: Ridgway, Robert,
    Type: Article
    In: Proceedings of the Biological Society of Washington.
    Volume: 18
    Date: 1905
    Page Range: 225--226
    Publication info: Washington,Biological Society of Washington
  38. By: Ridgway, Robert,
    Type: Article
    In: The Auk.
    Volume: 3
    Date: 1886
    Page Range: 334--337
    Publication info: Washington, D.C. :American Ornithologists' Union, etc.,1884-
  39. By: Ridgway, Robert,
    Type: Article
    In: Proceedings of the Biological Society of Washington.
    Volume: 3
    Date: 1880-1886
    Page Range: 21--24
    Publication info: Washington,Biological Society of Washington
  40. By: Ridgway, Robert,
    Type: Article
    In: Proceedings of the United States National Museum.
    Volume: 8
    Issue: 478
    Date: 1885
    Page Range: 25--30
    Publication info: Washington :Smithsonian Institution Press, [etc.]
  41. By: Ridgway, Robert,
    Type: Article
    In: Proceedings of the United States National Museum.
    Volume: 8
    Issue: 477
    Date: 1885
    Page Range: 23--24
    Publication info: Washington :Smithsonian Institution Press, [etc.]
  42. By: Ridgway, Robert,
    Type: Article
    In: Proceedings of the United States National Museum.
    Volume: 1
    Issue: 39
    Date: 1878
    Page Range: 252--255
    Publication info: Washington :Smithsonian Institution Press, [etc.]
  43. By: Ridgway, Robert,
    Type: Article
    In: Proceedings of the United States National Museum.
    Volume: 10
    Date: 1887
    Page Range: 267--268
    Publication info: Washington :Smithsonian Institution Press, [etc.]
  44. By: Ridgway, Robert,
    Type: Article
    In: Proceedings of the United States National Museum.
    Volume: 16
    Issue: 923
    Date: 1893
    Page Range: 43--44
    Publication info: Washington :Smithsonian Institution Press, [etc.]
  45. By: Ridgway, Robert,
    Type: Article
    In: Proceedings of the Biological Society of Washington.
    Volume: 16
    Date: 1903
    Page Range: 105--111
    Publication info: Washington,Biological Society of Washington
  46. By: Ridgway, Robert,
    Type: Article
    In: Proceedings of the United States National Museum.
    Volume: 10
    Issue: 660
    Date: 1888
    Page Range: 516--528
    Publication info: Washington :Smithsonian Institution Press, [etc.]
  47. By: Ridgway, Robert,
    Type: Article
    In: Smithsonian miscellaneous collections.
    Volume: 47
    Date: 1905
    Page Range: 112--113
    Publication info: Washington :Smithsonian Institution,1862-1972.
  48. By: Ridgway, Robert,
    Type: Article
    In: Proceedings of the United States National Museum.
    Volume: 16
    Issue: 953
    Date: 1893
    Page Range: 597--600
    Publication info: Washington :Smithsonian Institution Press, [etc.]
  49. By: Ridgway, Robert,
    Type: Article
    In: Proceedings of the United States National Museum.
    Volume: 17
    Issue: 1008
    Date: 1894
    Page Range: 371--373
    Publication info: Washington :Smithsonian Institution Press, [etc.]
  50. By: Ridgway, Robert,
    Type: Article
    In: Proceedings of the Biological Society of Washington.
    Volume: 28
    Date: 1915
    Page Range: 105--107
    Publication info: Washington,Biological Society of Washington
  51. By: Ridgway, Robert,
    Type: Article
    In: Proceedings of the Biological Society of Washington.
    Volume: 19
    Date: 1906
    Page Range: 115--120
    Publication info: Washington,Biological Society of Washington
  52. By: Ridgway, Robert,
    Type: Article
    In: Proceedings of the Biological Society of Washington.
    Volume: 18
    Date: 1905
    Page Range: 207--210
    Publication info: Washington,Biological Society of Washington
  53. By: Ridgway, Robert,
    Type: Article
    In: Proceedings of the Biological Society of Washington.
    Volume: 2
    Date: 1880-1886
    Page Range: 89--95
    Publication info: Washington,Biological Society of Washington
  54. By: Ridgway, Robert,
    Type: Article
    In: Proceedings of the United States National Museum.
    Volume: 10
    Issue: 655
    Date: 1888
    Page Range: 505--510
    Publication info: Washington :Smithsonian Institution Press, [etc.]
  55. By: Ridgway, Robert,
    Type: Article
    In: Proceedings of the Biological Society of Washington.
    Volume: 25
    Date: 1912
    Page Range: 87--92
    Publication info: Washington,Biological Society of Washington
  56. By: Ridgway, Robert,
    Type: Article
    In: Proceedings of the United States National Museum.
    Volume: 9
    Issue: 555
    Date: 1886
    Page Range: 92--94
    Publication info: Washington :Smithsonian Institution Press, [etc.]
  57. By: Ridgway, Robert,
    Type: Article
    In: The Auk.
    Volume: 15
    Date: 1898
    Page Range: 223--230
    Publication info: Washington, D.C. :American Ornithologists' Union, etc.,1884-
  58. By: Ridgway, Robert,
    Type: Article
    In: The Auk.
    Volume: 19
    Date: 1902
    Page Range: 69--70
    Publication info: Washington, D.C. :American Ornithologists' Union, etc.,1884-
  59. By: Ridgway, Robert,
    Type: Article
    In: Proceedings of the United States National Museum.
    Volume: 17
    Issue: 1007
    Date: 1894
    Page Range: 357--370
    Publication info: Washington :Smithsonian Institution Press, [etc.]
  60. By: Ridgway, Robert,
    Type: Article
    In: Proceedings of the Biological Society of Washington.
    Volume: 23
    Date: 1910
    Page Range: 53--55
    Publication info: Washington,Biological Society of Washington
  61. By: Ridgway, Robert,
    Type: Article
    In: Proceedings of the Biological Society of Washington.
    Volume: 16
    Date: 1903
    Page Range: 167--169
    Publication info: Washington,Biological Society of Washington
  62. By: Ridgway, Robert,
    Type: Article
    In: Proceedings of the Biological Society of Washington.
    Volume: 21
    Date: 1908
    Page Range: 191--195
    Publication info: Washington,Biological Society of Washington
  63. By: Ridgway, Robert,
    Type: Article
    In: Proceedings of the Biological Society of Washington.
    Volume: 24
    Date: 1911
    Page Range: 31--35
    Publication info: Washington,Biological Society of Washington
  64. By: Ridgway, Robert,
    Type: Article
    In: Proceedings of the Biological Society of Washington.
    Volume: 25
    Date: 1912
    Page Range: 97--101
    Publication info: Washington,Biological Society of Washington
  65. By: Ridgway, Robert,
    Type: Article
    In: The Auk.
    Volume: 3
    Date: 1886
    Page Range: 276--277
    Publication info: Washington, D.C. :American Ornithologists' Union, etc.,1884-
  66. By: Ridgway, Robert,
    Type: Article
    In: The Auk.
    Volume: 13
    Date: 1896
    Page Range: 331--332
    Publication info: Washington, D.C. :American Ornithologists' Union, etc.,1884-
  67. By: Ridgway, Robert,
    Type: Article
    In: The Auk.
    Volume: 14
    Date: 1897
    Page Range: 320--320
    Publication info: Washington, D.C. :American Ornithologists' Union, etc.,1884-
  68. By: Brewster, William, - Allen, J A - Coues, Elliott - Merriam, C. Hart (Clinton Hart), - Ridgway, Robert,
    Type: Article
    In: The Auk.
    Volume: 14
    Date: 1897
    Page Range: 117--135
    Publication info: Washington, D.C. :American Ornithologists' Union, etc.,1884-
  69. By: Coues, Elliott - Allen, J A - Brewster, William, - Chapman, Frank M. (Frank Michler), - Cory, Charles B - Henshaw, Henry W. (Henry Wetherbee), - Merriam, C. Hart (Clinton Hart), - Ridgway, Robert,
    Type: Article
    In: The Auk.
    Volume: 10
    Date: 1893
    Page Range: 59--63
    Publication info: Washington, D.C. :American Ornithologists' Union, etc.,1884-
  70. By: Allen, J A - Brewster, William, - Chapman, Frank M. (Frank Michler), - Cory, Charles B - Coues, Elliott - Henshaw, Henry W. (Henry Wetherbee), - Merriam, C. Hart (Clinton Hart), - Ridgway, Robert,
    Type: Article
    In: The Auk.
    Volume: 9
    Date: 1892
    Page Range: 105--108
    Publication info: Washington, D.C. :American Ornithologists' Union, etc.,1884-
  71. By: Ridgway, Robert,
    Type: Article
    In: Proceedings of the United States National Museum.
    Volume: 13
    Issue: 796
    Date: 1890
    Page Range: 47--48
    Publication info: Washington :Smithsonian Institution Press, [etc.]
  72. By: Ridgway, Robert,
    Type: Article
    In: The Auk.
    Volume: 11
    Date: 1894
    Page Range: 193--196
    Publication info: Washington, D.C. :American Ornithologists' Union, etc.,1884-
  73. By: Ridgway, Robert,
    Type: Article
    In: The Auk.
    Volume: 7
    Date: 1890
    Page Range: 205--206
    Publication info: Washington, D.C. :American Ornithologists' Union, etc.,1884-
  74. By: Ridgway, Robert,
    Type: Article
    In: The Auk.
    Volume: 2
    Date: 1885
    Page Range: 359--363
    Publication info: Washington, D.C. :American Ornithologists' Union, etc.,1884-
  75. By: Ridgway, Robert,
    Type: Article
    In: The Auk.
    Volume: 15
    Date: 1898
    Page Range: 330--331
    Publication info: Washington, D.C. :American Ornithologists' Union, etc.,1884-
  76. By: Ridgway, Robert,
    Type: Article
    In: The Auk.
    Volume: 26
    Date: 1909
    Page Range: 440--442
    Publication info: Washington, D.C. :American Ornithologists' Union, etc.,1884-
  77. By: Ridgway, Robert,
    Type: Article
    In: Proceedings of the United States National Museum.
    Volume: 8
    Issue: 472
    Date: 1885
    Page Range: 18--19
    Publication info: Washington :Smithsonian Institution Press, [etc.]
  78. By: Burns, Frank L. (Franklin Lorenzo) - Ridgway, Robert,
    Type: Article
    In: The Wilson bulletin.
    Volume: 42
    Issue: 2
    Date: 1930
    Page Range: 109--110
    Publication info: Columbus, Ohio :Wilson Ornithological Society,1894-
  79. By: Ridgway, Robert,
    Type: Article
    In: The Auk.
    Volume: 8
    Date: 1891
    Page Range: 333--339
    Publication info: Washington, D.C. :American Ornithologists' Union, etc.,1884-
  80. By: Ridgway, Robert,
    Type: Article
    In: Proceedings of the United States National Museum.
    Volume: 4
    Issue: 215
    Date: 1881
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