 Mr. Leidesdorf was active in civic and community service and received numerous honors and awards, including an honorary degree as doctor of humane letters from Hebrew Union College, the Medal of the National Fund for Medical Education, the Herbert H. Lehman Human Relations Award of the American Jewish Committee and the Medal for Distinguished Service from the Protestant Council of the City of New York.In 1958, Mr. Leidesdorf received The Hundred Year Association of New York's Gold Medal Award "in recognition of outstanding contributions to the City of New York.