- TitleCone of Silence (Original title)
Trouble in the Sky (Alternative title) - Film / VideoMaterials held in the BFI National Archive
- Digital materials (2)
DPX - - N-6922226
MasterWAV - - N-6922227
Master
Film materials (4)35mm BW Positive - Safety - Combined - - C-1221512
Master - Restricted access to preserved film35mm Duplicating Positive - Safety - Combined - 8250 Feet - Stock date: 1959 - - C-33172
Master - Restricted access to preserved film35mm Negative - Acetate - Sound - Stock date: 1959 - Stock date: 1959 - - N-51850
Master - Restricted access to preserved film35mm Original Negative - Acetate - Mute - Stock date: 1959 - - N-51848
Master - Restricted access to preserved film