The KNX collection was formerly the radio script archive at KNX (Los Angeles), a CBS affiliate radio station. In addition to scripts, the collection contains production notes and memoranda related to the broadcast of specific series. The collection contains over 9,300 individual scripts. Long series runs include:
- I Was There (1940-42, 44-45)
- Amos 'n' Andy (1944-51)
- Romance (1944-46, 48-51)
- The Story of Sandra Martin (1944-45)
- Suspense (1945-59)
- The Whistler (1945-51, 54-55)
- Escape (1947-54)
- My Friend Irma (1947-54)
- My Favorite Husband (1948-51)
- Our Miss Brooks (1948-57)
- Yours Truly, Johnny Dollar (1949-60)
- The Lineup (1950-53)
- Meet Millie (1951-54)
- Junior Miss (1952-54)
- Hallmark Hall of Fame (1953-55)
- Have Gun, Will Travel (1958-60)