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  1. By: Gray, Asa, - Porter, Thomas C. (Thomas Conrad), - Prestele, Joseph, - Prior, R. C. Alexander (Richard Chandler Alexander), - Purdy, Carl, - G. P. Putnam & Co.
    Publication info: [1844-1892]
    Holding Institution: Harvard University Botany Libraries
  2. By: Porter, Thomas C. (Thomas Conrad), - Small, John Kunkel,
    Publication info: Boston,Ginn & company,1904.
    Holding Institution: Library of Congress
  3. By: Porter, Thomas C. (Thomas Conrad), - Small, John Kunkel,
    Publication info: Boston,Ginn & Co.,1904.
    Holding Institution: Cornell University Library
  4. By: Porter, Thomas C. (Thomas Conrad),
    Holding Institution: Missouri Botanical Garden, Peter H. Raven Library
    BHL Collections: Engelmann Papers, Missouri Botanical Garden
  5. By: Porter, Thomas C. (Thomas Conrad), - Small, John Kunkel,
    Publication info: Boston,Ginn & Company,1903.
    Holding Institution: Cornell University Library
  6. By: Porter, Thomas C. (Thomas Conrad), - Small, John Kunkel,
    Publication info: Boston,Ginn & Company,1903.
    Holding Institution: Library of Congress
  7. By: Porter, Thomas C. (Thomas Conrad), - Small, John Kunkel,
    Publication info: Boston,Ginn & Co.,1903.
    Holding Institution: New York Botanical Garden, LuEsther T. Mertz Library
    BHL Collections: New York Botanical Garden
  8. By: Porter, Thomas C. (Thomas Conrad),
    Publication info: Philadelphia,1896.
    Holding Institution: University of California Libraries (archive.org)
  9. By: Porter, Thomas C. (Thomas Conrad), - Coulter, John Merle,
    Publication info: Washington :Govt. print. off.,March 20, 1874.
    Holding Institution: Multiple institutions
    BHL Collections: Engelmann Herbarium
  10. By: Porter, Thomas C. (Thomas Conrad),
    Holding Institution: New York Botanical Garden, LuEsther T. Mertz Library
    BHL Collections: John Torrey Papers | New York Botanical Garden
  11. By: Bailey, L. H. (Liberty Hyde), - Bebb, M. S. (Michael Schuck), - Blaschka, Rudolf, - Deane, Walter, - Lloyd, C. G. (Curtis Gates), - Morong, Thomas, - Owen, Maria L. (Maria Louisa), - Rose, J N (Joseph Nelson) - Allen, Glover M. (Glover Morrill), - Audubon, Florence, - Audubon, Maria R. (Maria Rebecca), - Bailey, Eliza R., - Barnes, Charles Reid, - Batchelder, Annie V. - Batchelder, Charles Foster, - Benson, Albert Emerson, - Brainerd, Ezra, - Brewster, William, - Carr, Albert Bonus, - Carr, Gladys V., - Chase, Agnes, - Cheney, Robert F., - Christensen, Abby W., - Churchill, Joseph Richmond, - Coolidge, Charles Austin, - Curtiss, Allen Hiram, - Cushing, Mary, - Deane, Charles E., - Demetrio, C. H. (Charles Hermann), - Dexter, Lucy W., - Dexter, Mary, - Eames, Edwin Hubert, - Eaton, A. A. (Alvah Augustus), - Eggleston, W. W. - Faber, Helen R., - Faber, Richard R., - Farlow, W. G. (William Gilson), - Farwell, Oliver Atkins, - Faxon, Edwin, - Fernald, George B., - Fernald, Merritt Lyndon, - Foord, William M., - Foster, Theodore B., - Ganong, William Francis, - Gattinger, Augustin, - Glatfelter, Noah Miller, - Goodale, George L. (George Lincoln), - Greene, Edward Lee, - Greenman, Anne T., - Greenman, J. M. (Jesse More), - Hay, G. U. (George Upham), - Heading, Alice J., - Herriot, W., - Hervey, E. W. (Eliphalet Williams), - Hill, E. J. (Ellsworth Jerome), - Hitchcock, A. S. (Albert Spear), - Holm, Theo. (Theodor), - Hopkins, Richard J., - Huber, Lucretia M., - Jesup, Henry G. (Henry Griswold), - Kennedy, George G. (George Golding), - Knowlton, Frank Hall, - Lamson-Scribner, F. - Linder, Charles, - Lowell, James Arnold, - Lunell, Joel - Mathews, F. Schuyler (Ferdinand Schuyler), - Maxon, William R. (William Ralph), - McAtee, W. L. (Waldo Lee) - Meehan, Thomas, - Munter, William H., - Oldys, Henry, - Paton, Lucy Allen, - Pease, Arthur Stanley, - Peebles, Florence - Peebles, Florence, - Penhallow, D. P. (David Pearce), - Pennock, Charles J., - Philbrook, Augustus E., - Porter, Thomas C. (Thomas Conrad), - Pringle, Cyrus G. (Cyrus Guernsey), - Putnam, Bessie Lucina, - Putnam, William T., - Rand, Edward Lothrop - Rau, Eugene A. (Eugene Abraham), - Rehder, Alfred, - Richardson, Martha Bebb, - Robinson, Benjamin Lincoln, - Rolfe, W. J. - Sandberg, John Herman, - Scudder, Winthrop S., - Sheppard, Susan, - Shute, Fred A., - Spaulding, F. B., - Sprague, A. C., - Steere, Rebecca P., - Stone, Phoebe J., - Stowell, Ruth K., - Suksdorf, Wilhelm, - Tatnall, Edward, - Tatnall, Edward, - Terry, Emily Hitchcock, - Thaxter, Roland, - Thayer, Evelyn - Thayer, John Eliot, - Townsend, Charles Wendell, - Underwood, Lucien Marcus, - Vasey, George, - Ward, Lester F. (Lester Frank), - Ward, Lester F. (Lester Frank), - Ware, Robert Allison, - Weatherby, Charles Alfred, - Wiegand, K. M. (Karl McKay), - Williams, Emile Francis, - Williams, R. S. - Williams, R. S.  (Robert Statham), , - Wood, Casey A. (Casey Albert), - Woodhouse, S. W. (Samuel Washington), - Harvard University. Gray Herbarium.
    Holding Institution: Harvard University Botany Libraries
    BHL Collections: Archives from the Boston Metropolitan Park Flora | Women in Natural History
  1. By: Porter, Thomas C. (Thomas Conrad),
    Type: Article
    In: Rhodora
    Volume: 1
    Date: 1899
    Page Range: 182--185
    Publication Info: [Cambridge, Mass., etc.]New England Botanical Club [etc.]
  2. By: Porter, Thomas C. (Thomas Conrad),
    Type: Article
    In: Botanical gazette.
    Volume: 11
    Issue: 3
    Date: 1886
    Page Range: 64--64
    Publication Info: Hanover, Ind. :[publisher not identified],1876-1991.
  3. By: Porter, Thomas C. (Thomas Conrad),
    Type: Correspondence
    In: George Edward Davenport correspondence
    Date: 1890-09-01
  4. By: Porter, Thomas C. (Thomas Conrad),
    Type: Correspondence
    In: George Golding Kennedy correspondence.
    Date: 1900-01-09
  5. By: Porter, Thomas C. (Thomas Conrad),
    Type: Correspondence
    In: Asa Gray correspondence.
    Date: 1874-04-10
    Publication Info: [1844-1892]
  6. By: Porter, Thomas C. (Thomas Conrad),
    Type: Correspondence
    In: Asa Gray correspondence.
    Date: 1867-04-11
    Publication Info: [1844-1892]
  7. By: Porter, Thomas C. (Thomas Conrad),
    Type: Correspondence
    In: Asa Gray correspondence.
    Date: 1874-04-11
    Publication Info: [1844-1892]
  8. By: Porter, Thomas C. (Thomas Conrad),
    Type: Correspondence
    In: Asa Gray correspondence.
    Date: 1874-04-15
    Publication Info: [1844-1892]
  9. By: Porter, Thomas C. (Thomas Conrad),
    Type: Correspondence
    In: Asa Gray correspondence.
    Date: 1874-04-17
    Publication Info: [1844-1892]
  10. By: Porter, Thomas C. (Thomas Conrad),
    Type: Correspondence
    In: Asa Gray correspondence.
    Date: 1852-04-20
    Publication Info: [1844-1892]
  11. By: Porter, Thomas C. (Thomas Conrad),
    Type: Correspondence
    In: Asa Gray correspondence.
    Date: 1849-04-23
    Publication Info: [1844-1892]
  12. By: Porter, Thomas C. (Thomas Conrad),
    Type: Correspondence
    In: Asa Gray correspondence.
    Date: 1853-08-20
    Publication Info: [1844-1892]
  13. By: Porter, Thomas C. (Thomas Conrad),
    Type: Correspondence
    In: Asa Gray correspondence.
    Date: 1873-12-10
    Publication Info: [1844-1892]
  14. By: Porter, Thomas C. (Thomas Conrad),
    Type: Correspondence
    In: Asa Gray correspondence.
    Date: 1863-12-11
    Publication Info: [1844-1892]
  15. By: Porter, Thomas C. (Thomas Conrad),
    Type: Correspondence
    In: Asa Gray correspondence.
    Date: 1877-12-19
    Publication Info: [1844-1892]
  16. By: Porter, Thomas C. (Thomas Conrad),
    Type: Correspondence
    In: Asa Gray correspondence.
    Date: 1873-12-22
    Publication Info: [1844-1892]
  17. By: Porter, Thomas C. (Thomas Conrad),
    Type: Correspondence
    In: Asa Gray correspondence.
    Date: 1887-02-10
    Publication Info: [1844-1892]
  18. By: Porter, Thomas C. (Thomas Conrad),
    Type: Correspondence
    In: Asa Gray correspondence.
    Date: 1881-02-11
    Publication Info: [1844-1892]
  19. By: Porter, Thomas C. (Thomas Conrad),
    Type: Correspondence
    In: Asa Gray correspondence.
    Date: 1872-01-01
    Publication Info: [1844-1892]
  20. By: Porter, Thomas C. (Thomas Conrad),
    Type: Correspondence
    In: Asa Gray correspondence.
    Date: 1892-01-12
    Publication Info: [1844-1892]
  21. By: Porter, Thomas C. (Thomas Conrad),
    Type: Correspondence
    In: Asa Gray correspondence.
    Date: 1872-01-22
    Publication Info: [1844-1892]
  22. By: Porter, Thomas C. (Thomas Conrad),
    Type: Correspondence
    In: Asa Gray correspondence.
    Date: 1870-01-27
    Publication Info: [1844-1892]
  23. By: Porter, Thomas C. (Thomas Conrad),
    Type: Correspondence
    In: Asa Gray correspondence.
    Date: 1892-01-28
    Publication Info: [1844-1892]
  24. By: Porter, Thomas C. (Thomas Conrad),
    Type: Correspondence
    In: Asa Gray correspondence.
    Date: 1870-01-04
    Publication Info: [1844-1892]
  25. By: Porter, Thomas C. (Thomas Conrad),
    Type: Correspondence
    In: Asa Gray correspondence.
    Date: 1859-01-07
    Publication Info: [1844-1892]
  26. By: Porter, Thomas C. (Thomas Conrad),
    Type: Correspondence
    In: Asa Gray correspondence.
    Date: 1847-07-13
    Publication Info: [1844-1892]
  27. By: Porter, Thomas C. (Thomas Conrad),
    Type: Correspondence
    In: Asa Gray correspondence.
    Date: 1883-07-14
    Publication Info: [1844-1892]
  28. By: Porter, Thomas C. (Thomas Conrad),
    Type: Correspondence
    In: Asa Gray correspondence.
    Date: 1879-07-15
    Publication Info: [1844-1892]
  29. By: Porter, Thomas C. (Thomas Conrad),
    Type: Correspondence
    In: Asa Gray correspondence.
    Date: 1859-07-20
    Publication Info: [1844-1892]
  30. By: Porter, Thomas C. (Thomas Conrad),
    Type: Correspondence
    In: Asa Gray correspondence.
    Date: 1847-07-29
    Publication Info: [1844-1892]
  31. By: Porter, Thomas C. (Thomas Conrad),
    Type: Correspondence
    In: Asa Gray correspondence.
    Date: 1877-06-22
    Publication Info: [1844-1892]
  32. By: Porter, Thomas C. (Thomas Conrad),
    Type: Correspondence
    In: Asa Gray correspondence.
    Date: 1857-06-06
    Publication Info: [1844-1892]
  33. By: Porter, Thomas C. (Thomas Conrad),
    Type: Correspondence
    In: Asa Gray correspondence.
    Date: 1870-06-08
    Publication Info: [1844-1892]
  34. By: Porter, Thomas C. (Thomas Conrad),
    Type: Correspondence
    In: Asa Gray correspondence.
    Date: 1864-03-15
    Publication Info: [1844-1892]
  35. By: Porter, Thomas C. (Thomas Conrad),
    Type: Correspondence
    In: Asa Gray correspondence.
    Date: 1877-05-01
    Publication Info: [1844-1892]
  36. By: Porter, Thomas C. (Thomas Conrad),
    Type: Correspondence
    In: Asa Gray correspondence.
    Date: 1867-05-20
    Publication Info: [1844-1892]
  37. By: Porter, Thomas C. (Thomas Conrad),
    Type: Correspondence
    In: Asa Gray correspondence.
    Date: 1880-05-20
    Publication Info: [1844-1892]
  38. By: Porter, Thomas C. (Thomas Conrad),
    Type: Correspondence
    In: Asa Gray correspondence.
    Date: 1855-05-21
    Publication Info: [1844-1892]
  39. By: Porter, Thomas C. (Thomas Conrad),
    Type: Correspondence
    In: Asa Gray correspondence.
    Date: 1856-11-12
    Publication Info: [1844-1892]
  40. By: Porter, Thomas C. (Thomas Conrad),
    Type: Correspondence
    In: Asa Gray correspondence.
    Date: 1877-11-02
    Publication Info: [1844-1892]
  41. By: Porter, Thomas C. (Thomas Conrad),
    Type: Correspondence
    In: Asa Gray correspondence.
    Date: 1886-11-04
    Publication Info: [1844-1892]
  42. By: Porter, Thomas C. (Thomas Conrad),
    Type: Correspondence
    In: Asa Gray correspondence.
    Date: 1872-10-01
    Publication Info: [1844-1892]
  43. By: Porter, Thomas C. (Thomas Conrad),
    Type: Correspondence
    In: Asa Gray correspondence.
    Date: 1879-10-14
    Publication Info: [1844-1892]
  44. By: Porter, Thomas C. (Thomas Conrad),
    Type: Correspondence
    In: Asa Gray correspondence.
    Date: 1862-10-18
    Publication Info: [1844-1892]
  45. By: Porter, Thomas C. (Thomas Conrad),
    Type: Correspondence
    In: Asa Gray correspondence.
    Date: 1847-10-19
    Publication Info: [1844-1892]
  46. By: Porter, Thomas C. (Thomas Conrad),
    Type: Correspondence
    In: Asa Gray correspondence.
    Date: 1871-10-02
    Publication Info: [1844-1892]
  47. By: Porter, Thomas C. (Thomas Conrad),
    Type: Correspondence
    In: Asa Gray correspondence.
    Date: 1856-10-31
    Publication Info: [1844-1892]
  48. By: Porter, Thomas C. (Thomas Conrad),
    Type: Correspondence
    In: Asa Gray correspondence.
    Date: 1860-09-14
    Publication Info: [1844-1892]
  49. By: Porter, Thomas C. (Thomas Conrad),
    Type: Correspondence
    In: Asa Gray correspondence.
    Date: 1865-09-18
    Publication Info: [1844-1892]
  50. By: Porter, Thomas C. (Thomas Conrad),
    Type: Correspondence
    In: Asa Gray correspondence.
    Date: 1865-09-25
    Publication Info: [1844-1892]
  51. By: Porter, Thomas C. (Thomas Conrad),
    Type: Correspondence
    In: Asa Gray correspondence.
    Date: 1849-09-27
    Publication Info: [1844-1892]
  52. By: Porter, Thomas C. (Thomas Conrad),
    Type: Correspondence
    In: Asa Gray correspondence.
    Date: 1867-09-03
    Publication Info: [1844-1892]
  53. By: Porter, Thomas C. (Thomas Conrad),
    Type: Correspondence
    In: Asa Gray correspondence.
    Date: 1858-09-04
    Publication Info: [1844-1892]
  54. By: Porter, Thomas C. (Thomas Conrad),
    Type: Correspondence
    In: Walter Deane correspondence.
    Date: 1889-08-03
  55. By: Porter, Thomas C. (Thomas Conrad),
    Type: Correspondence
    In: Walter Deane correspondence.
    Date: 1894-12-31
  56. By: Porter, Thomas C. (Thomas Conrad),
    Type: Correspondence
    In: Walter Deane correspondence.
    Date: 1890-02-22
  57. By: Porter, Thomas C. (Thomas Conrad),
    Type: Correspondence
    In: Walter Deane correspondence.
    Date: 1892-02-27
  58. By: Porter, Thomas C. (Thomas Conrad),
    Type: Correspondence
    In: Walter Deane correspondence.
    Date: 1892-01-18
  59. By: Porter, Thomas C. (Thomas Conrad),
    Type: Correspondence
    In: Walter Deane correspondence.
    Date: 1891-01-05
  60. By: Porter, Thomas C. (Thomas Conrad),
    Type: Correspondence
    In: Walter Deane correspondence.
    Date: 1889-11-12
  61. By: Porter, Thomas C. (Thomas Conrad),
    Type: Correspondence
    In: Walter Deane correspondence.
    Date: 1892-11-29
  62. By: Porter, Thomas C. (Thomas Conrad),
    Type: Correspondence
    In: Walter Deane correspondence.
    Date: 1895-11-05
  63. By: Porter, Thomas C. (Thomas Conrad),
    Type: Correspondence
    In: Walter Deane correspondence.
    Date: 1889-10-01
  64. By: Porter, Thomas C. (Thomas Conrad),
    Type: Correspondence
    In: Walter Deane correspondence.
    Date: 1889-10-11
  65. By: Porter, Thomas C. (Thomas Conrad),
    Type: Correspondence
    In: Walter Deane correspondence.
    Date: 1889-10-12
  66. By: Porter, Thomas C. (Thomas Conrad),
    Type: Correspondence
    In: Walter Deane correspondence.
    Date: 1889-09-23
  67. By: New England Botanical Club. - Porter, Thomas C. (Thomas Conrad),
    Type: List
    In: Plant lists from the New England Botanical Club.
    Date: 1865