Sort By:
  1. Catalogue of the Bryophyta (hepatics, anthocerotes and mosses) and Pteridophyta (ferns and fern-allies) found in Pennsylvania.
    By: Porter, Thomas C. - Small, John Kunkel,
    Publication info: Boston,Ginn & Co.,1904.
    Contributed by: Cornell University Library
    View Book
  2. Correspondence : Porter (Thomas) and Engelmann (George), 1851-1882.
    By: Porter, Thomas C.
    Contributed by: Missouri Botanical Garden, Peter H. Raven Library
    BHL Collections: Engelmann Papers, Missouri Botanical Garden
    View Book
  3. Flora of Pennsylvania,
    By: Porter, Thomas C. - Small, John Kunkel,
    Publication info: Boston,Ginn & Company,1903.
    Contributed by: Library of Congress
    View Book
  4. Flora of Pennsylvania,
    By: Porter, Thomas C. - Small, John Kunkel,
    Publication info: Boston,Ginn & Company,1903.
    Contributed by: Cornell University Library
    View Book