Cyril P. Callister Cyril P. Callister Cyril Percy Callister (16 February 1893 – 5 October 1949) was an Australian chemist and food technologist who developed the Vegemite yeast spread. The son of a teacher and postmaster, and one of seven children, he attended the Ballarat School of Mines and later won a scholarship to the University of Melbourne. He gained a Bachelor of Science degree in 1914 and a Master of Science degree in 1917. In early 1915, Callister was employed by food manufacturer Lewis & Whitty, but later that year he enlisted in the Australian Imperial Force. After 53 days, however, he
Marion Jones Callister Marion Jones Callister Marion Jones Callister (June 6, 1921 – June 24, 1997) was a United States District Judge of the United States District Court for the District of Idaho. Born in Moreland, Idaho, Callister graduated from Blackfoot High School in 1939 and was in the United States Army during World War II, from 1944 to 1946. He received a Bachelor of Science in Law from the University of Utah in 1950, and a Juris Doctor from the S.J. Quinney College of Law at the University of Utah in 1951. Callister was an assistant Bingham County attorney in Blackfoot, Idaho