 More than he could bear, Lee resigned and began a lucrative career in the investment field.At the suggestion of his older brother, William Ellsworth "Bill" Lee, T. P. agreed to meet with a young wildcatter named Miles Franklin Yount, at the time a resident of Sour Lake, Texas, and afterward, T. P. invested $25,000 in the new enterprise that became the Yount-Lee Oil Company, one of the most successful independent oil producers of its day.Yount-Lee went on to drill numerous deep-flank oil wells in both East Texas and Louisiana, and was responsible for the Second Spindletop boom begun at Beaumont, Texas on November 14, 1925.