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.

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.

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.