The Secret Behind A Burger Cult. New York Times. August 14, 2002. Consultado el 21 de julio de 2007. «In-N-Out Burger was founded just northeast of here, in Baldwin Park, by a husband-and-wife team, Harry and Esther Snyder, the same year McDonald's opened its first drive-through restaurant in San Bernardino. In-N-Out has never franchised and remains privately owned by Mrs. Snyder, who is now 81. The company does not release financial data, but Restaurants and Institutions, a trade publication, estimates that it did $160 million in sales in 2001, growing at a healthy clip of 10 percent a year. McDonald's, meanwhile, had $40.6 billion in sales last year.»
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Esther Snyder, 86; Began In-N-Out Burger. New York Times. August 13, 2006. Consultado el 21 de julio de 2007. «Esther L. Snyder, who with her husband founded the popular West Coast restaurant chain In-N-Out Burger, died on August 4. She was 86. The family declined to release further details, including the cause of death, said Bob Emmers of Sitrick & Company, which handles public relations for the chain. Esther and Harry Snyder opened the first In-N-Out drive-through stand in Baldwin Park, Calif., in 1948. In-N-Out now has 202 restaurants in Arizona, California and Nevada.»
