Physician and promoter of health foods best known for his invention of Corn Flakes. AQS signed “John Harvey Kellogg, Sept. 8, 1927,” on a light green 6 x 4.25 album page. Kellogg writes: “Health is the greatest wealth and valued most when lost and unattainable.” Accompanied by an unsigned pre-printed Christmas card. Rough left edge, mild edge toning, and some scattered light creasing, otherwise fine condition. RRAuction COA.