Will Keith Kellogg a healthy breakfast food. They started the Sanitas Food Company around 1897, focusing on the production of their whole grain cereals. At the time, the standard breakfast for the well-off was eggs and meat, while the poor ate porridge, farina, gruel and other boiled grains. The brothers eventually argued over the addition of sugar to their product. In 1906, Will founded the "Battle Creek Toasted Corn Flake Company", later becoming the Kellogg Company. In 1930, he established the W. K. Kellogg Foundation, ultimately donating $66 million to it. His company was one of the first to put nutrition labels on
Fay Kellogg death in 1901, Kellogg set up business for herself, establishing her own office in 1903. One of her first commissions was the renovation and construction of seven buildings on Park Place in Manhattan for the American News Company. She was soon in charge of all their building and renovation work in the United States. For jobs within 200 miles of New York City, Kellogg would supervise directly. For projects further afield, she would draw plans. Kellogg also helped design the Woman's Memorial Hospital in Brooklyn, founded by female physicians in 1881, as well as hundreds of other buildings and cottages.