DALLAS, TX.- Heritage Auctions has announced that Aviva Lehmann has been promoted to Vice President and Director of American Art.

"Aviva is a universally respected and admired expert in the American Art community," Heritage Auctions Co-Chairman Jim Halperin said. "Her wealth of knowledge has been vital to Heritage Auctions' growth within the American Art auction business."

Lehmann joined Heritage Auctions' New York office in 2013 with an extensive résumé that included a stint as Vice President, Specialist in American Art at Christie's, where she was instrumental in helping the American Art department set dozens of auction records and doubling the value of mid-season auctions.

Her professional expertise is supplemented by extensive academic work in the American Art field. The magna cum laude Art History graduate from Yeshiva University in New York is an adjunct professor of Appraisals and Valuation in the Art Administration Master's Program at New York University, and lectures at museums and institutions nationwide.

Lehmann's depth of knowledge and experience have made her an in-demand American Art expert for numerous media outlets: she has been featured in numerous publications, including Intelligent Collector, Christie's Magazine and Yeshiva University Alumni Magazine, and has shared her expertise on multiple television networks, including Fox News and Bloomberg.