Collection Contents
Series 1. Academic career. 1925-1955, undated.
Series Scope and Content Summary
Typescript titled "Lecture on Tropical Fruit" by Dean Merrill. 1925.
Research papers written by colleagues and students regarding horticulture. 1944-1950.
Lecture notes from Horticulture 102 class. 1950-1952.
Lecture notes from Horticulture 102 class. 1953-1954.
Examinations from Horticulture 102 class. 1951-1954.
Photographs and negatives of Horticulture 102 class field trip to San Diego, California. 1946.
Correspondence of Frederick F. Halma regarding his retirement. 1954-1955.
Photographs and negatives of cherimoya fruit, kei apples and pistachio trees. 1938-1940.
Press clipping from the California Citrograph (August 1954) regarding the retirement of Frederick F. Halma. 1954.
Lantern slides of cherimoya fruit. undated.
Series 2. Citrus research and industry. 1919-1956, undated.
Series Scope and Content Summary
Documents written by Frederick F. Halma to the Dean about research projects, expenses, and World War II activities. 1944-1954.
Annual reports and summaries regarding citrus projects and experiments conducted by Frederick F. Halma. 1926-1932.
Annual reports and summaries regarding citrus projects and experiments conducted by Frederick F. Halma. 1933-1954.
Correspondence between Frederick F. Halma, citrus growers, and colleagues regarding citrus projects and citrus plots. 1950-1956.
Research conducted by Frederick F. Halma regarding citrus fruit and trees. 1952-1954, undated.
Press clippings regarding Frederick F. Halma and his citrus research. 1945-1946, undated.
Publications written by Frederick F. Halma regarding citrus research and the citrus industry. Includes a numbered bibliography that lists both citrus and avocado publications in chronological order (Note: avocado publications are located in Series 3). 1919-1929.
Publications written by Frederick F. Halma regarding citrus research and the citrus industry. 1931-1941.
Publications written by Frederick F. Halma regarding citrus research and the citrus industry. 1942-1952.
Project files regarding Citrus Project 193-D, a comparative study of oranges and lemons propagated by cuttings and budding. 1933-1937, undated.
Project files regarding the J.W. Wing plot of citrus trees that were part of Citrus Project 193-D. 1933-1946, undated.
Project files regarding the Citrus Experiment Station S1, Block C Plot of citrus trees that were part of Citrus Project 193-D. 1932-1952.
Press clippings and correspondence regarding an orange tree that Frederick F. Halma donated to the City of Riverside that was produced from the cuttings of the Riverside Parent Navel Orange Tree. Includes press clippings about Eliza Tibbets and the origins of the Riverside Parent Navel Orange Tree. 1934-1936.
Photographs and negatives of white sapote fruit and of wooden frames built around orange trees where soil temperatures were recorded. 1938-1940.
Photographs of an unidentified citrus experiment station. undated.
Photographs of the 1928 St. Francis Dam disaster that occurred near Santa Clarita, California. 1928.
Series 3. Avocado research and industry. 1937-1963.
Series Scope and Content Summary
Report (1943-1953) on the progress and findings of Frederick F. Halma's avocado rootstock experiments. 1953.
Documents regarding avocado rootstock trials conducted in California by Frederick F. Halma. 1944-1953.
Annual reports and summaries regarding avocado rootstock investigations. 1945-1963.
Documents and correspondence regarding avocado rootstock investigations and the avocado plots/trees involved in the investigations. 1944-1961.
Documents regarding the California avocado plots involved in avocado rootstock investigations, trials, and experiments. 1948-1953.
Project files regarding an avocado variety project conducted by Frederick F. Halma. 1949-1954.
Documents and photographs regarding the effect of low temperatures on avocado trees during the freeze of January 1937. 1937-1939.
Publications written by Frederick F. Halma regarding avocado research and the avocado industry. Includes a numbered bibliography that lists both citrus and avocado publications in chronological order (Note: citrus publications are located in Series 2). 1937-1952.
Press clippings about Frederick F. Halma and his avocado research. 1948-1949.
Photographs and negatives of avocado fruit, avocado trees, and of Frederick F. Halma and his wife working with young avocado trees. 1940-1954.