Sir: I can set Jasper Rees's mind at rest on two points (Television review, 21 September). Cold War's production team did not colourise any black and white archive footage. Some of it may look "suspicious", but early colour film was erratic and poor storage has not helped. Our film researchers' discoveries are down to hard graft, not electronic wizardry. The unedited text of all Cold War's interviews is being made available on the Internet, via the CNN COLDWAR and National Security Archive web sites.
Series Producer, "Cold War"
Jeremy Isaacs Productions