Al St. John and Bob Duncan have appeared together in 1 film in 1949. Every shared film with year, roles and gross, plus who else each works with most.
| Year | Film | Box office |
|---|---|---|
| 1949 | Son of Billy the Kid |
Al St. John also often with: Lash LaRue (7), Clarke Stevens (5), Ron Ormond (5), Bud Osborne (4), Cliff Taylor (4)
Bob Duncan also often with: Johnny Mack Brown (2), Lee Roberts (2), Lewis D. Collins (2), Anthony Dexter (1), Bill Hammond (1)