Wallace O. Westfeldt, whose half-century career in journalism career started in print and led to network and public broadcasting, died Jan. 11 at his daughter’s home in Plattsburgh, N.Y. He was 91.

The family announced the death but did not cite a cause.

Mr. Westfeldt’s first newspaper job was as a reporter at the Nashville Tennessean when it was at the forefront of covering desegregation. He was assigned to cover the landmark Supreme Court school segregation case, Brown v. Board of Education.

Mr. Westfeldt left in 1960 to work on the documentary series “NBC White Paper” and then the news program “The Huntley-Brinkley Report” in 1963. He became the program’s executive producer and oversaw NBC’s coverage of the Vietnam War, producing the first live, one-hour satellite reports from overseas.

In 1971, Mr. Westfeldt launched the “NBC Nightly News” with John Chancellor and later was executive producer of “NBC Reports.”

He left NBC in 1976 for a job as executive producer of the PBS weekly series “USA: People & Politics” and then went to ABC News to work on the investigative unit ABC Special Reports.

Returning to NBC in 1979, he worked on the program “Prime Time Sunday.” He retired from the network in 1982.

In 1987, Mr. Westfeldt began a long association with interviewer David Frost, who asked him to produce a 13-part series on the 1988 presidential candidates called “The Next President.” He also worked on “Talking With David Frost” and “One on One With David Frost.”

His awards included four Emmys, a Peabody and an American Bar Association Silver Gavel Award.

Wallace Ogden Westfeldt Jr. was born in New Orleans on Sept. 23, 1923. He served in the Marine Corps during World War II and the Korean War. He was a 1947 graduate of the University of the South in Sewanee, Tenn.

His first wife, Stacy Kauffeldt, died in 1996 after 52 years of marriage. Survivors include his wife of 14 years, Miriam Goulding of Plattsburgh; a daughter from his first marriage, Erica Swift of Plattsburgh; a brother; and two granddaughters.