The first screen adaptation of a James Bond book was telecast on October 21, 1954 on the anthology series, Climax!. Barry Nelson played CIA agent Jimmy Bond. Wikipedia article IMDb article Casino Royale (1954) The Curious Legacy of Casino Royale In spite of the YouTube titles, this was shown in 1954, not 1953. You may have to crank up the volume a bit: Part 1 Part 2 Part 3 Part 4 Part 5 Part 6
