I have just acquired a mass of business correspondence relating to the love of Coral's life, Jack Buchanan. Among the items I have a found a Post Office note concerning an undeliverable telegram to Coral in Canada (sent 31/12/1955) from JB's agent, Al Parker and a couple of letters to JB from Philip Pearman, Coral's first husband, who seems to have taken over as JB's agent from Al Parker. Philip Pearman was also Jack Buchanan's understudy at one time.
In case it is of interest to anyone, the Jack Buchanan Correspondence is currently for sale on a 10 day Auction on ebay.co.uk.