In 1934 he joined Israel Sack, Inc, which was moving from Boston to New York City. His older brother Harold worked at the firm, too. From 1942 until 1946 he served in the
United States Army. Upon detachment, he rejoined the firm of Israel Sack until it closed in 2002. Declining to retire, at age 87, he then matriculated to Northeast Auctions, working for three years. He and his father were influential in steering their clients to gift important American pieces of furniture to American Museums. This cast an indelible mark of "masterpieces of our heritage" in the public mind. Further, Albert donated a vast collection of photographs and related
ephemera of antique furniture to the
Yale University Art Gallery. which had a palpable effect on research and scholarship in the field. He, his older brother, and the firm created the "Israel Sack Galleries" at the
Metropolitan Museum of Art. Donated by the family in 2011, the Sack Family Archive and the Israel Sack, Inc., Archive are reposed at the
Yale University Library and the
Yale Art Gallery. ==Death and legacy==