Color postcard showing advertisements for various early products, including Ingram's Milk Weed Cream; Dr. Price's Extract Vanilla; Jap Rose Soap; Wrigley's Spearmint Gum; Cream of Wheat and Valentine Co. Valspar Varnish. Caption on back: Guarding the Treasure Box, W. K. Kellogg, showing a child sitting on an oversized box of Kellogg's Toasted Corn Flakes