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A Check List of The Atracheata (Bryophyta) of Iowa. Dec. 1943. Booklets. Letter from United States Department of Agriculture Scientific Assistant. June 7, 1919. Cooperrider, Tom S. The Ferns and Other Pteridophytes of Iowa. V.XX N.1 Booklet with notes. Desiderata for the Grinnell Local Herbarium. Notes. Herbarium Check List. Plants of Central Iowa: Grinnell Flora. 3rd Edition. Booklets. 2 copies. Plants of Central Iowa: Grinnell Flora. 2nd Edition. Booklets. 14 copies. Plants of Central Iowa: Grinnell Flora. 5th Edition. Booklets. 9 copies. Reprints of Henry J. Conard’s work and miscellaneous.