He came to Princeton from The Hill School, where he was on the soccer and wrestling teams. At Princeton he was on the wrestling team, a member of Cottage Club, Right Wing Club, Student Christian Association, and the Rugby Club. He majored in economics.

After graduation he served in the Navy in Taiwan. Mark and Betty were married in 1961. In 1962 he earned an MBA in finance at Wharton. He worked for Colgate Palmolive and Squib until 1971, when he purchased a seat on the American Stock Exchange. In 1991 they moved to Lancaster, Pa., and he attended the Culinary Institute of America and in 1993 opened A Loaf of Bread in Lancaster and ran it until he retired in 2003. Throughout he was active in Quaker organizations wherever they lived.

Mark enjoyed long-distance running, including the New York City, Boston, and Century marathons. He switched to bicycle touring, and then in 2004 had a knee replacement but kept up an active life with swimming, walks, and some bicycling.

Mark is survived by his wife, Elizabeth; their son, Matthew; two brothers; and many nieces, nephews, and cousins. The class extends them its deepest sympathy.