Friendly was not involved personally in Bletchley's code-breaking efforts, nor did he in any sense oversee them. Friendly published some wonderful reminiscences of his time at Bletchley, the somewhat mistitled "Confessions of a Code Breaker" [The Post, Oct. 27, 1974]. Among his wartime colleagues was the future Nuremberg prosecutor and Columbia University law professor Telford Taylor, who headed the liaison unit.
David Sherman, Chevy Chase
The writer is retired from the National Security Agency.