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Series 1. Citrus Experiment Station agricultural library records. 1954-1967, undated.
Purchase orders for microfiche copies of library materials. 1954, 1956.
Manuscript written by Dr. Ira Condit explaining the scope and content of the William T. Horne memorial avocado collection. Includes a bibliography of titles to purchase for the library collection. undated.
Bibliographies and notes listing the holdings of the William T. Horne memorial avocado collection. 1957-1967.
Correspondence between the California Avocado Society and Ms. Kathryn Forrest, a librarian at the University of California, Riverside Agricultural Library. 1963-1967.
Statistics from the William T. Horne memorial avocado collection regarding circulation of library materials. 1964-1966.
Series 2. Citrus research and industry. circa 1910-1959, undated.
Clippings and manuscripts about citrus judging methods and standards. 1925-1927.
Photographs of citrus trees and orchard equipment. 1937-1948, undated.
Publications from the citrus industry advertising citrus products and recipes. 1924-1959, undated.
Publications and clippings of citrus industry research about pruning methods and citrus products. 1915-1935.
Student theses for the Bachelor of Science degree from the College of Agriculture, Division of Citriculture, University of California primarily dealing with agriculture. circa 1910-1920.
Curriculum for correspondence courses in agriculture from the University of California, College of Agriculture, Agricultural Experiment Station. circa 1920-1930.
Laboratory and field excursion notes in citriculture and sub-tropical horticulture, University of California. circa 1920-1930.
Field notes on Summer Session/Traveling courses in citriculture and horticulture, University of California. circa 1915-1925.
Series 3. Avocado research and industry. 1826-1980, undated.
Publications and other material from the Calavo avocado growers of California. Includes marketing advice, recipes, and annual reports. Includes select volumes of the Calavo news. 1926-1964.
Price lists from the Calavo avocado growers of California showing the prices of avocados by variety. 1943-1957.
Minutes from the California Avocado Advisory Board. 1968-1969.
Newsletters and memorandums from the Calavo avocado growers of California. 1932-1961.
Publications, programs, and minutes from the California Avocado Association and the California Avocado Society. 1917-1962.
Programs and correspondence from the Avocado Growers Institute of La Habra and San Diego County. 1937-1954.
Programs, clippings, and minutes from the Los Angeles County Farm Bureau avocado department meetings. 1932-1955.
Agendas from the California Farm Bureau avocado department meetings. 1950-1957.
Correspondence, clippings, and programs from the Orange County Farm Bureau. 1931-1957, undated.
Programs from the Carlsbad Avocado Day. 1926-1927.
Reports and correspondence from the Ventura County Farm Bureau Avocado Variety Committee. 1928-1929.
Annual reports from the La Habra Heights Avocado Association. 1941-1955.
Annual reports from the Varieties Committee of the California Avocado Association 1934-1940.
Publications and clippings advertising avocado nurseries and avocado groves. 1914-1922, undated.
Manuscript written by Wilson Popenoe describing his trip to Atlixico, Mexico. 1938.
Programs, correspondence, and other material regarding avocado judging standards and methods. 1917, undated.
Reports and publications about marketing and economics in the avocado industry. 1975-1978, undated.
Publications of Growth, a monthly magazine about financial issues in the California agriculture industry. 1926-1927.
Manuscripts, publications, and other material about avocado orchard management. 1949-1976, undated.
Clippings and other material about the Parent Fuerte Avocado Tree in Atlixico, Mexico. 1938, undated.
Publications, manuscripts, and other material about avocado industry production. 1925-1962, undated.
Syllabi for an avocado production and marketing course from the University of California Cooperative Agricultural Extension. 1977.
Report of avocado research prepared for the Avocado Research Advisory Committee. 1975.
Publications and other material about avocado flower research. 1924-1976.
Manuscript and publication about avocado oil research. 1928, 1939.
Publications and research about the vitamins and dietary benefits of avocados. 1926-1955.
Reports from the University of California Division of Agricultural Sciences regarding the termination of projects. 1960-1966.
Publications and manuscripts about soil research. 1975-1976.
Research about pests and diseases. 1912-1980.
Project files by Dr. Condit about avocados. Listed as Project 305, The Avocado, conducted at Berkeley, California. 1914-1915.
Publications and research about irrigation. 1974-1976.
Publications, research, and other material regarding avocado varieties in the United States. 1897-1927, undated.
Publications (international) and research about avocado varieties. Most items are in a foreign language, including Spanish, French and German. 1826-1955, undated.
Photographs of an avocado growers meeting in Vista, California. 1943.
Photographs of avocado trees and avocado groves. 1922-1927, undated.
Photographs of avocados. 1919-1921, undated.
Photographs of avocado displays and advertisements. 1926, undated.
Photographs of avocado and avocado tree bark at the microscopic level. undated.
Photographs of young avocado plants. 1937, 1953, undated.
Publications and clippings about the history and culture of the avocado. Recipes are included in some of the publications. 1900-1921, undated.
Publications (international) and clippings about avocados. All items are in a foreign language, including Spanish, French, and Russian. 1933-1951, undated.