"Ralph A. DeJur, retired president and chairman of the DeJur-Amsco Corporation, which made photographic equipment and office copiers, died on Wednesday at his home in Manhattan. He was 93 years old. Mr. DeJur, who was born in Manhattan, founded the company in the late 1920's with his brother, Harry. The company, in Long Island City, Queens, originally made photographic equipment and later expanded to include office copiers. / Mr. DeJur retired in 1974 when the business was sold. It has since closed. / He donated extensively to educational institutions and was one of the founders of Albert Einstein Medical College and of Yeshiva University. / A widower, Mr. DeJur is survived by two daughters, Sandra Berkley of Manhattan, and Jacqueline Feinberg of Providence, R.I., and five grandchildren." (The New York Times, May 18, 1990)