Heinrich "Harry" Heye Tammen was an American journalist, publisher, and businessman. He worked alongside Frederick Gilmer Bonfils and co-owned The Denver Post, the Kansas City Post, and the Sells Floto Circus.

Lou Blonger, born Louis Herbert Belonger, was a Wild West saloonkeeper, gambling-house owner, and mine speculator, but is best known as the kingpin of an extensive ring of confidence tricksters that operated for more than 25 years in Denver, Colorado. His "Million-Dollar Bunco Ring" was brought to justice in a famous trial in 1923.