Hurrah a FACT, PROOF something tangible at last ! The man who wrote this letter is the late Dr Patrick McGrath (PM) described by his son as 'the tenth and last medical superintendent of what was then called Broadmoor Lunatic Asylum, in 1957.'
So, more or less, everything that I have written about Jimmy's initial involvement appears to be correct. He was asked to come by the patients. The then boss of the institution permitted his visits and, most importantly, monitored them and the effect that they had on the people who he spent his whole life helping; his patients. NOTE that word for future reference folks 'PATIENTS' not PRISONER's, it's important !
So, there's 'Britt' the entertainments officer about whom Jimmy fondly remarks on the back of that record