Jean Harlow: the famous “blonde bombshell” actress who died at the age of 26

Harry Houdini: his ghost is said to haunt the Plaza Hotel in Las Vegas

Thomas Ince: one of the most respected directors of the silent film era

Andrew Jackson: the seventh president of the United States

Jesse James: outlaw and train robber

Thomas Jefferson: the third president of the United States

Robert E. Lee: Confederate general in the Civil War

John Lennon: musician; former member of the Beatles

Liberace: known for his piano playing skills, charisma, and diamonds

Abraham Lincoln: the 16th president of the United States

Marilyn Monroe: actress who died mysteriously in 1962

Elvis Presley: singer, musician, and actor; he has been seen by stagehands at the Las Vegas Hilton

George Reeves: the star of the 1950s television series Superman

Betsy Ross: credited with sewing the first American flag

Bugsy Siegel: a colorful Las Vegas underworld figure

Dylan Thomas: a Welsh poet and writer

Mark Twain: popular humorist, novelist, and writer

Rudolph Valentino: one of the greatest Hollywood romantic idols

John Wayne: actor; he has been seen on his old yacht, the Wild Goose.

Orson Welles: considered one of Hollywood's greatest directors