[4][5] In 1989, with Christopher Andersen, he co-wrote, The Best of Everything: The Insider's Guide to Collecting--For Every Taste and Every Budget, published by Simon & Schuster.
[6] The book suggests anyone can attend auctions and become a collector, even on a limited budget.
[7][8] The John L. Marion Chair in Art History, Painting, and Sculpture at Fordham University is named in his honor.
[2] He was the fourth husband of philanthropist Anne Windfohr Marion.
[1][3] They were married at the Church of the Heavenly Rest on the Upper East Side in Manhattan, New York City, in 1988.