In the advertising world, Leokum may be best known for his slogan for the Chock full o'Nuts coffee ad campaign, a slogan that pushed Chock full o'Nuts from a seventh-rank position to third in New York City: "Don't spend the extra money for this coffee (unless you're just plain crazy about good coffee)."http://newsgroups.derkeiler.com/Archive/Rec/rec.arts.books.childrens/2010-12/msg00033.html In the November 24, 1958, issue of Broadcasting Magazine ("a news journal for the broadcasting Industry that began covering radio in 1931 and expanded to include television as that medium developed"; renamed "Broadcasting & Cable" in 1993 and "B&C" in 2002), Grey Advertising, Inc. reported "a gain of more than $1 million over 1957 to such new accounts as Westinghouse Electric, Inc., Ronson Corp, and General Electric Co." Spot-TV radio advertisers active during the year were Block Drug Co., Greyhound, Chock full o'Nuts Corp., Chunky Chocolate Corp., Hoffman Beverage Co., G. Kreuger Brewing Co., and R.H. Macy Co."
