The hamburger chain's ad agency, McCann Erickson, is working on a new campaign.
Wendy's founder Dave Thomas represented the restaurant chain for more than a decade before his death a few years ago.
Wendy's Old-Fashioned Hamburgers was founded Nov. 15, 1969, and is the third-largest quick-service hamburger chain in the world, with more than 6,500 restaurants in North America and international markets.
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