For the first time, HLC Properties Ltd. – the estate of Bing Crosby – has released a series of extremely moving letters sent from Bing Crosby to the families of young soldiers during World War II. Alongside his words of support and reassurance are also handwritten letters to Bing, from those relatives, thanking him for bringing joy and a sense of hope to their beloved sons, husbands and brothers. Also revealed today is a collection of poignant photographs of Crosby entertaining troops during World War…