International Botanical Congress XI, 1969-1970, undated

These records pertain to affiliations with professional scientific organizations such as the American Academy of Arts & Sciences, the American Philosophical Society, the Botanical Society of America, the International Mycological Congress I (1971) & II (1977), and the National Academy of Sciences. The content includes correspondence, minutes, reports, election balloting, programs, and membership lists. Dr. Raper was associated with the American Type Culture collection as (1) a representative of the USDA Northern Regional Research Laboratory (NRRL) as a member of the National Research Council's ATCC Committee (1948-1954) and (2) as chairman of the Executive Committee of the ATCC Board of Trustees itself (1954-1962). There are 15 files of correspondence, minutes, and reports pertaining to Dr. Raper's association with the International Union of Biological Sciences (IUBS).

Dr. Raper was Chairman of the Executive Committee for International Botanical Congress XI (1969) held at the University of Washington in Seattle. There are 3 boxes containing correspondence, circular bulletins, committee histories, minutes, financial records, reports, grants, and memorabilia. The records relate to solicitation of sponsors, financial planning, advertising, publicity, social events, medals, stamps, and publications, as well as the overall organization and hosting of the event. Photography of IBC social events is located in Series 13: Photographic Material.