John Edward Leet was a pioneer real estate businessman and journalist in Denver, Colorado. He was from New Orleans and came to Denver in 1879. Leet's father, Daniel, had founded Leetsdale, Pennsylvania, but had joined his son's family in Denver and entered into business with John. John was engaged in various investments and real estate ventures in Colorado and surrounding states. He also wrote columns for various newspapers and owned a cattle ranch (Leetsisle Ranch) near Douglas, Wyoming. His businesses were devastated following the Panic of 1893, and did not recover until after the Panic of 1907. John married Modeste Caillier in 1871, and they had three children, Emma Downing, Laura Roller, and Edmond. Edmond and his wife Dorothy, lived in Wyoming and operated the Leetsisle Ranch.
From the description of Diaries 1888-1923. (University of Wyoming, American Heritage Center). WorldCat record id: 27702781
