Breakfast cereal he launched the Cornflakes brand, which overnight captured a national market. Soon there were forty rival manufacturers in the Battle Creek area. His brother William K. Kellogg (1860–1951) worked for him for many years until, in 1906, he broke away, bought the rights to Cornflakes, and set up the Kellogg Toasted Corn Flake Company. William Kellogg discarded the health food concept, opting for heavy advertising and commercial taste appeal. Later, his signature on every package became the company trademark. The second major innovator in the cereal industry was Charles W. Post, a salesman who was admitted to Kellogg's sanitarium as
Laura Cornelius Kellogg the Everett Report buoyed Kellogg and her supporters with the hope of successfully reclaiming Oneida and Six Nations lands in New York State and Pennsylvania. In October 1922, after an extensive investigation and report by Kellogg, the Oneida Nation of Wisconsin announced that they would pursue a claim for 6 million New York acres of land valued at $2 billion. A Committee of 22 was appointed to prosecute claim, and Kellogg was appointed secretary to raise funds for the undertaking. Kellogg and her husband set up a headquarters at Onondaga, New York, the traditional capital of the Six Nations, and