Ruthrauff & Ryan

Ruthrauff & Ryan was a prominent American advertising agency founded in 1912. Clients included A. H. Lewis' Tums brand, American Airlines, Campbell Soup's Franco American brand, Canadian Pacific, Cocomalt, Dodge Brothers, Dr Pepper, Gillette Safety Razor Company, Goodrich Rubber, Lehn and Fink, Lever Brothers' Rinso, Lifebuoy, and Spry brands, Noxzema Chemical Company, Packard Motor Car Company, Pennzoil, Quaker Oats, and Wm. Wrigley Jr. Company. The principals included Wilbur B. Ruthrauff and Fritz Ryan. By 1957 they'd merged with another agency; the merged agency closed in 1964.

According to Advertising Age, the agency was during its heyday one of the most powerful in the industry.