How did Holmes Peak get its name?

Holmes Peak is named after the fictional character Sherlock Holmes created by Sir Arthur Conan Doyle in 1887. Richard S. Warner filled out the paperwork with the United States Board on Geographic Names, and the name became official on October 5, 1983.
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Holmes Peak has been mentioned as a site for the proposed Shan Gray monument, The American.

Source Warner, Richard S. (1985). The Naming of Holmes Peak. The Baker Street Journal, 35, pp. 29-31. Tulsa World, April 23, 2004; p.A1. 

Who is the only Tulsan to win an Oscar for Best Actress?

Jennifer Jones for "The Song of Bernadette" in 1943.

Source: Tulsa World, June 1, 2003; p.H2. 

According to urban legends, where are some haunted locations in the Tulsa area?

The Tulsa World has listed these places in the Tulsa area as spooky places to visit during the Halloween season. These include: The Silver Dollar Cafe, Crybaby Bridge, Gravity Hill, Center of the Universe, The Hanging Tree, The Brady Theater, The Tower of Darkness, Sparky's Graveyard (Postoak Cemetery), the Old North Road Brick Factory, Thomas Gilcrease Home, Cain's Ballroom, the Tulsa Garden Center, Jason's Deli at 15th Street, the Tulsa Little Theater, and The Hex House.

Who starred in the 1949 film "Tulsa"?

Robert Preston and Susan Hayward

Source: Tulsa World, June 1, 2003; p.H2. 

When did the Tulsa Race Riot occur?

The incident began on 31 May 1921, and continued into the next day, 1 June 1921.

Source: Death in a Promised Land (TCCL call# 976.686 E47d 1982), pp.47-57.