. "2015-04-21Z"^^ . . "Willis, Betty"@en . . "American graphic designer" . . . . . . "2015-04-19Z"^^ . "1999Z"^^ . . "Betty Willis"@en . "1923Z"^^ . "Betty Jane Willis (n\u00E9e Whitehead; May 20, 1923 \u2013 April 19, 2015) was an American visual artist and graphic designer. Born in Overton, Nevada, she is best known for having been the designer of the Welcome to Fabulous Las Vegas sign, and has been attributed to being an influencer in defining modern Las Vegas' visual image."@en . "Betty Jane Whitehead"@en . "2015Z"^^ . "1923-05-20Z"^^ . "1942Z"^^ . .