Story highlights Stephen Adams is spending over $650,00 to boost Donald Trump's campaignAdams is buying his own company's billboards in critical swing states to promote TrumpWashington (CNN) A billionaire backing Donald Trump is taking advertising into his own hands. Stephen Adams, a billboard magnate who made his fortune in a half-dozen different business ventures over the last five decades, is pouring hundreds of thousands of dollars into a pro-Trump campaign. It is an unusual purchase and a throwback to a previous era when the wealthy had close to unfettered control over how their dollars were spent. That is not a trivial amount of money, given the long struggles of Trump high-dollar efforts. If donated to a PAC -- staffed by professional operatives and fundraisers -- Adams would instantly become one of Trump's top donors.

Source: CNN September 11, 2016 00:56 UTC