[3] He seized the opportunity to begin a mail-order stamp business when The Washington Post offered free classified ads to teenagers.

Procter & Gamble (P&G) sponsored the radio show Ivory Stamp Club of the Air during the Great Depression.

[8] His son, H. E. Harris Jr. (born 1925),[9] had started selling stamps to various local drug, novelty, and variety stores while still in elementary school.

[8] After serving in the Eighth Air Force in England during World War II, the younger Harris purchased the Kenmore name from his father and re-established the company in Arlington, Massachusetts.

[11] In 1975, Harris sold his business to the venture capital arm of General Mills, which discontinued the stamps-on-approval mail-order service.