(Saturday, May 3, 1952) — The Kentucky Derby was televised nationally for the first time today airing from then-CBS affiliate WHAS. The winner was Hill Gail.

Video: 1992 Los Angeles Riots (KNBC-TV, May 2, 1992, 11 p.m. PDT, part 1)

(Saturday, May 2, 1992) — With armed soldiers standing guard, residents of burned and looted neighborhoods in Los Angeles swept up today after three days of rioting that deeply scarred the city and shook the nation. Continue reading LA begins to clean up after three days of riots 20 years ago today (1992) →

(Tuesday, May 2, 1972) — A fire today at the Sunshine silver mine in Kellogg, Idaho, claimed the lives of 91 workers who succumbed to carbon monoxide poisoning.

(Friday, May 2, 1952) — The era of commercial jet passenger service began today as a BOAC de Havilland Comet carrying 36 passengers took off on a multi-stop flight from London to Johannesburg, South Africa.

(Monday, May 2, 1932) — Jack Benny’s first radio show, sponsored by Canada Dry, made its debut today on the NBC Blue Network and continuing there for six months until October 26, moving the show to CBS on October 30, 1932.

Video: '1982 World's Fair - Overview'

(Saturday May 1, 1982) — The 1982 World’s Fair in Knoxville, Tennessee, was opened today by President Ronald Reagan with the theme: “Energy Turns the World.”