Roger Lewis, 75, a board chairman and president of the General Dynamics Corp. in the 1960s who had been an assistant secretary of the Air Force in the 1950s and a president of the National Railroad Passenger Corp. (Amtrak) in the 1970s, died of cardiac arrest Nov. 12 at his home in Washington.

Mr. Lewis, a California native, was an aviation industry executive when he came to Washington in March 1953 as assistant secretary of the Air Force for procurement. He held that post for two years before resigning to become the executive vice president of Pan American World Airways.

In 1962, he joined the General Dynamics Corp. and was president, board chairman and chief executive officer of the giant defense contracting concern. He worked on company financial recovery programs and helped guide work on such programs as the F111 aircraft and Polaris missile submarines. He left the company in 1971.

From 1971 to 1975, he was president of Amtrak. He became head of the government-subsidized rail operation in its infancy and led it through a troubled youth. Amtrak, established to revitalize intercity rail travel, was caught in the midst of conflicting demands of consumers, railroad companies and the government. Mr. Lewis found himself the focal point of those dissatisfied with what they believed was unaggressive leadership. He announced in November 1974 that he wanted to step down as soon as a replacement could be found.

In 1975, after leaving Amtrak, he went to New York and became a senior vice president and director of the brokerage firm of Hornblower, Weeks, Noyes & Trask Inc. He also became a charter member of the board of directors of the Pyropower Corp. of La Jolla, Calif.

He was a 1955 recipient of the Medal of Freedom for his work as assistant Air Force secretary on foreign aid programs, particularly in Italy, Turkey and Japan. He was a trustee of Stanford University, a fellow of the American Institute of Aeronautics & Astronautics, a director of the National Alliance of Businessmen and member of the Defense Industry Advisory Council. He also had been chairman of the board of trustees of the Logistics Management Institute. He was a member of the Metropolitan Club.

Mr. Lewis, who had lived in Washington since 1984, was born in Los Angeles and graduated from Stanford University. In 1934, he went to work for Lockheed Aircraft, leaving that company in 1947 as assistant sales manager. From 1947 to 1950, he was a vice president of Canadair Ltd. in Montreal. He then spent three years as vice president of the Curtiss-Wright Corp.

His wife, the former Elly Thummler, died in 1984. Survivors include a son, Ronald Lourens Lewis of East Hampton, N.Y.; two daughters, Gail Lewis Tobin of Kent, Conn., and Pamela Lewis Casey of West Hartford, Conn.; a brother, Marshall, and two sisters, Virginia Ehrisman and Margery Hanson, all of California, and six grandchildren.

DR. JOSEPH M. WHITE,

67, an independent consultant on pharmaceutical issues and the president of the Aspirin Foundation of America, died of congestive heart failure Nov. 12 at his home in Alexandria.

Dr. White was born in Baltimore. He graduated from Loyola College in Baltimore and earned a degree in medicine from the University of Maryland in Baltimore.

He served in the Army Medical Corps from 1946 to 1948. He taught pharmacology and toxicology at Yale University from 1948 to 1953 and was on the medical faculty of the University of Maryland from 1953 to 1957.

For the past 30 years, he had been an independent consultant on the pharmaceutical industry, working frequently for Miles Laboratories Inc. Since 1981, he had been president of the Aspirin Foundation and regularly represented the aspirin industry on regulatory matters in Washington.

Dr. White had produced several medical education films, including "Operation Windchill," "If I Had an Ulcer" and "Early Diagnosis of Coronary Artery Disease."

His marriage to Dr. Mary Louise Touchet White ended in divorce.

Survivors include his wife, Nancy Burns of Alexandria; three children by his first marriage, Peggy Robertson of Warrenton, N.C., Stanley White of Ledgwood, N.J., and Joseph M. White VI of Greenwich, Conn.; one brother, John White, and one sister, Janet Connor, both of Baltimore, and one grandson.

MARGARET PATTERSON RUDDOCK,

80, a retired CIA librarian, died of cancer Nov. 13 at her home in Washington.

Mrs. Ruddock was born in Roanoke Rapids, N.C., and reared in Richmond. She was a graduate of Bryn Mawr College and received a master's degree in library science from Catholic University.

During the early 1940s she was assistant to the chairman of the fine arts department at the College of William and Mary.

In 1947 Mrs. Ruddock moved to Washington and worked as an assistant librarian at Dumbarton Oaks. In the 1950s she joined the CIA, where she was head of the library's catalogue section. She retired in 1969 after about 15 years with the agency.

Her marriage to Billings Ruddock ended in divorce.

Survivors include one sister, Elizabeth Patterson Williams, and one brother, Dr. John L. Patterson, both of Richmond.

WILLIAM H. BROWN,

95, a retired Baptist minister who also was a cafeteria worker with Government Services Inc., died of congestive heart failure Nov. 11 at the Veterans Administration Hospital in Washington.

Mr. Brown, a lifelong resident of Washington, served in the Army in France in World War I. He worked for Government Services, operators of cafeterias in government buildings, for 35 years until he retired about 1965.

Ordained a Baptist minister, he was pastor of the First St. John Baptist Church in Washington from about 1937 until he retired from the pulpit about 1975. The church closed at that time.

His wife, Irene G. Brown, died in 1974. Survivors include three stepchildren, Joan Ledbetter of Forestville, and George Hodge and Lloyd Ellis, both of Washington; one sister, Agnes Ball, also of Washington; eight grandchildren, and six great-grandchildren.