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Anonymous. 1937. In Memoriam: Bohumil Shimek 1861-1937. Proceedings of the Iowa Academy of Science 44: 31-33.

Briggs, J.E. (editor) 1934. Thomas Huston Macbride. The Palimpsest 15: 161-192.

Conard, Rebecca. 1997. Places of Quiet Beauty: Parks, Preserves and Environmentalism. University of Iowa Press, Iowa City. xv + 382 pp.

Eilers, Lawrence J. and Dean M. Roosa. 1994. The Vascular Plants of Iowa: A Checklist and Natural History. University of Iowa Press, Iowa City. xi + 304 pp.

Gabel, Mark L. 1981. The Parry Herbarium. Proceedings of the Iowa Academy of Science 88(4):179.

Hamilton, Clement W. 2002. Robert F. Thorne – Recipient of the 2001 Asa Gray Award. Systematic Botany 27: 1-3.

Hayden, Ada. 1948. The History and Further Development of the Iowa State College Herbarium. Unpublished manuscript.13 typewritten pages.

Hayden, Ada. n.d.[latter half of 1940's]. The History of the Herbarium of Iowa State College. Unpublished manuscript. 4 typewritten pages.

Horton, Diana G. Collections History. Retrieved January 2005 from:

Hulbary, Robert L. 1972. George Willard Martin 1886-1971. Plant Science Bulletin 18(4).

Isely, Duane. 1988. Botany, Iowa State University, 1868-1988. Departmental publication. 8 pp. (part of publication prepared for review panel by D.G. Glenn-Lewin and J. Nystrom).

Isely, Duane. 1989. Ada Hayden: A Tribute. Journal of the Iowa Academy of Science 96(1):1-5.

Kellerman, W.A. 1907. Obituary: Professor A.P. Morgan. Journal of Mycology 13: 233-236.

Loehwing, Walter F. 1947. Centennial Memoirs: Bohumil Shimek. University of Iowa Press, Iowa City. 36 pp.

Lovell, Jan. 1987. She fought to Save Iowa's Prairies. The Iowan 36(2):22-26, 56-57.

Martin, George W. 1935. Thomas Huston Macbride, an appreciation. The Scientific Monthly 40: 284-286.

McNabb, Harold S., Jr. 1969. An Historical Outline of the First Century of Botanical Instruction at the Iowa State University of Science and Technology, Ames, Iowa. Unpublished manuscript. 22 typewritten pages.

Mertins, Clarence T. and Duane Isely. 1981. Charles E. Bessey: Botanist, Educator, and Protagonist. Iowa State Journal of Research 56(2):131-148.

Pammel, L.H., I.E. Melhus, and RI Cratty. 1927. Report on the Herbarium of Iowa State College, 1927. Unpublished manuscript. 50 typewritten pages.

Pohl, Marjorie C. 1985. Louis H. Pammel: Pioneer Botanist A Biography. Proceedings of the Iowa Academy of Science 29(1)[Special Issue]:1-50.

Pohl, Marjorie C. 1997. Richard W. Pohl: Distinguished Botanist. A Biography. Journal of the Iowa Academy of Science 104(3):56-76.

Rogers, Donald P. 1981. A Brief History of Mycology in North America (augmented edition). Mycological Society of America. 86 pp.

Shimek, Bohumil. 1934. In Memoriam: Thomas Huston Macbride 1848-1934. Proceedings of the Iowa Academy of Science 41: 33-37.

Thorne, Robert F. 1951. Herbarium of the State University of Iowa. Proceedings of the Iowa Academy of Science 58: 215-219.

Welch, Winona H. and Fabius LeBlanc. 1972. Henry S. Conard (1874-1971). The Bryologist 75: 558-565.

Also various unpublished "Annual Reports" of the Iowa State University Herbarium, especially for the years 1955 to present.