[Answer] Which billionaire installed a pay phone for his guests to use when they visited his house?

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Which billionaire installed a pay phone for his guests to use when they visited his house?

• J. Paul Getty:In 1966, J. Paul Getty was named the richest man in the world. Despite his vast wealth, the billionaire was infamously frugal. He is remembered for two things: placing a pay phone in his home, and refusing to pay his grandson's $17 million kidnapping ransom. Getty placed dial-locks on all the regular telephones, limiting their use to his staff. A coin-box telephone was installed at his mansion for guests to use so that he would not be billed for their calls. As for his grandson's kidnapping, Getty ended up paying the $2.2 million portion of the ransom that was tax deductible, and loaned the remaining $800,000 of the ransom to his son (at 4% interest) to pay the kidnappers.

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