Born in Brooklyn, N.Y., Mr. Seymour was the son of Russian immigrants. At a young age, he sold newspapers during baseball games at Ebbets Field and concessions at Madison Square Garden. Mr. Seymour enrolled in the Civilian Conservation Corps, part of the New Deal, and was stationed in Montana with his brother Glenn, building roads. He returned to New York, then moved to California around the beginning of World War II. He worked at the shipyards at the port of Los Angeles at San Pedro, where he assembled ships. He came to Arizona in 1948, acquired a real estate license and began selling houses, becoming a leader in the developing real estate market in Tucson.
Mr. Seymour is survived by his wife of 48 years, Thelma; daughter, Estelle (Ted) Elliott of Westlake Village, Calif.; stepson David Rodriguez of Camarillo, Calif.; and three grandchildren.
Graveside services were held in Evergreen Cemetery, with Rabbi Samuel M. Cohon of Temple Emanu-El officiating.