Analysis of information sources in references of the Wikipedia article "Smiley" in English language version.
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[Loufrani] points out that a smiley face was a key feature of a well-known promotional campaign for a radio network on America's East Coast in the late Fifties.
…Worcester/Guarantee president John Adam, Jr., admitted: "I guess we proved that a smile really goes a long way." He added, when asked why the companies hadn't trademarked the button design: "We never intended to keep the smile to ourselves—we want everyone to smile and to keep smiling and to remind them that that is our first goal in serving our customers—keep 'em smiling!"
There are fermatas, exclamation points, question marks, and, in the middle and at the end, enigmatic signs that look like a hybrid of a half note and a smiley face
{{cite web}}: CS1 maint: deprecated archival service (link)[Loufrani] points out that a smiley face was a key feature of a well-known promotional campaign for a radio network on America's East Coast in the late Fifties.
…Worcester/Guarantee president John Adam, Jr., admitted: "I guess we proved that a smile really goes a long way." He added, when asked why the companies hadn't trademarked the button design: "We never intended to keep the smile to ourselves—we want everyone to smile and to keep smiling and to remind them that that is our first goal in serving our customers—keep 'em smiling!"