Cyril P. Callister called Vegemite, first sold by Fred Walker & Co in 1923. Working from the details of a James L. Kraft patent, Callister was successful in producing processed cheese. The Walker Company negotiated a deal for the rights to manufacture the product, and in 1926, the Kraft Walker Cheese Company Ltd was established. Callister was appointed chief scientist and production superintendent of the new company. Between 1919 and 1927 he had 3 children (two boys and a girl) named Ian, Bill and Jean. They were the original vegemite kids. During World War II Ian unfortunately died Callister got his Doctorate from
1922 in France 1922 in France Events from the year 1922 in France. The year 1922 was signalized at its opening by the conference of Cannes, between France, the United Kingdom, and Belgium, which met to consider the situation created by Germany's declaration of her inability to pay what was demanded of her for 1922. The chief result of this conference was a decision to hold a general European conference at Genoa, and Aristide Briand, the French premier, signed with the British prime minister, David Lloyd George, a draft pact of guarantee which stated that "guarantees for the security of France against a