Robert L. Jacks was a producer and writer known for producing the first four seasons of The Waltons. His film credits include Prince Valiant (1954), Bandito (1956), The Roots of Heaven (1958) and The Undefeated (1969).
| Episode |
The Dick Powell Show The Last Of The Private Eyes |
1963 |
| Episode |
Johnny Staccato A Piece of Paradise |
1959 |
| Episode |
Johnny Staccato The Only Witness |
1960 |
| Episode |
Maverick The Ghost Soldiers |
1959 |
| Episode |
Johnny Staccato The Mask of Jason |
1960 |
| Movie | Man from Del Rio | 1956 |
| Episode |
The Waltons The Typewriter |
1972 |
| Movie | The Day the Loving Stopped | 1981 |
| Movie | The Undefeated | 1969 |
| Movie | Young Love, First Love | 1979 |
| Episode |
The Waltons The Calf |
1972 |
| Movie | Do Not Fold, Spindle, or Mutilate | 1971 |
| Episode |
The Waltons The Hunt |
1972 |
| Movie | A Kiss Before Dying | 1956 |
| Movie | The Proud Ones | 1956 |
| Movie | Bandolero! | 1968 |
| Movie | Man on a Tightrope | 1953 |
| Movie | Gorilla at Large | 1954 |
| Movie | The Homecoming: A Christmas Story | 1971 |
| Movie | Prince Valiant | 1954 |
| Episode |
The Waltons The Foundling |
1972 |
| Movie | Princess of the Nile | 1954 |
| Movie | Murder Can Hurt You! | 1980 |
| Movie | The Girls of Huntington House | 1973 |
| Movie | A Few Days in Weasel Creek | 1981 |
| Episode |
The Waltons The Carnival |
1972 |
| Movie | Mr. Horn | 1979 |
| Episode |
The Waltons The Star |
1972 |
| Movie | Man in the Attic | 1953 |