When I was a boy in the 1950's, I used to look toward downtown at night and watch the top of the tallest building, the National Bank of Tulsa, change colors (it was illuminated by different colored lights which cycled). The Philtower Building was the second tallest building. They were the two tallest, most prominent buildings in the Tulsa skyline. Now, you can barely see them among the other larger buildings. The Philtower is the building in the middle with the sloped red and green tile roof.
According to the Tulsa Preservation Commission...
"This unusual building was built in 1928 and 1929, by Waite Phillips, who made over twenty-five million dollars in the oil industry. He gave away most of his money to his employees, the City of Tulsa and the Boy Scouts. This building has an Imperial English colorful, shingle tiled roof, two 13th Century gargoyles (ugly human figures) at the street level and a 25-foot high Gothic arch entrance. Inside, the lobby has a carved Italian marble ceiling, a ceiling fan and specially made lighting fixtures suspended from the ceiling. It has huge elevator doors made of marble and brass with the distinctive WP (Waite Phillips initials) shield."
"Perhaps more than any other building in Tulsa, the Philtower Building is believed by many to have figured in the major decisions affecting the oil and gas industry in the United States. This was particularly true through the 1950s, when many of the most influential of the industry's leaders were either tenants in or visitors to the Philtower. "