Steven L. Alexander, 73, a television news cameraman who filmed the shooting of presumed presidential assassin Lee Harvey Oswald by Jack Ruby in Dallas in 1963, died Dec. 22 at a hospital in Boston.

He had esophageal cancer, his wife, Areve Alexander, said.

Mr. Alexander lived in Chevy Chase from 1966 to 1986 and worked primarily as a freelance camera operator for the three major TV networks — ABC, CBS and NBC — and for local stations.

Early in his career, Mr. Alexander worked for a TV station in Shreveport, La. He was visiting his family in Texas when President John F. Kennedy was assassinated in Dallas on Nov. 22, 1963. He drove to Dallas and received an assignment to cover the aftermath of the shooting for NBC.

Mr. Alexander was filming Oswald’s transfer from one police facility to another when Ruby, a nightclub owner, shot and killed Oswald on Nov. 24, 1963.

Steven Lyle Alexander was born in Waco, Tex., and was a news photographer in his teens. He later covered major civil rights events in the South for television networks.

After moving from Chevy Chase in 1986, he lived in Dayton, Ohio, before settling in Woburn, Mass. In recent years, he had concentrated on still photography.

Survivors include his wife of 54 years, Areve Brachman Alexander of Woburn; two sons, Benjamin Alexander of Los Angeles and Rick Alexander of Wilmington, Del.; a sister; and four grandchildren. A son, Keith Alexander, died in 2003.

— Matt Schudel