Which oil billionaire, who died in 1976, was famous for the pay phone he installed for guests at his English mansion, Sutton Place?

Nadia Comăneci in 1976 and Nastia Liukin in 2008 were Olympic all-around champions in which sport? Which former astronaut represented Ohio in the U.S. Senate from 1974 to 1999? Robert Conrad played Major Gregory "Pappy" Boyington in which 1976 World War II TV series? Which group had a 1976 No. 1 hit with "(Shake, Shake, Shake) Shake Your Booty"? Which TV series about a pioneer family was set in Walnut Grove, Minnesota? What is the name of the condition characterized by frequent, uncontrollable episodes of deep sleep? Who scored the first perfect 10 in Olympic gymnastics history, at the 1976 Montreal Games? Which famous Milan opera house opened in 1778?