For Walter Backerman, seltzer is more than a drink. It is the embodiment of his family. As a third generation seltzer man, he follows parts of the same cobblestone route his grandfather began in 1920’s Manhattan. Walter maintains a collection of more than seven thousand antique bottles that he circulates to his customers. Many bear the family name, a tribute to his father and his grandfather before him. Now, after 90 years of the Backerman’s being in the business, Walter knows all too well...