You are right -'Beyond the Blue Horizon' by Alexander Frater first published 1986. I have a much thumbed and well loved copy in front of me as I write. Frater was however writing more about Imperial Airways and it was their routes and staging posts which he set out to trace half a century later. A fascinating story. As for the Connies and Lancastrians a decade or so later, equally gripping, and especially interesting to read the BOAC timetables posted above. GBP600 return (there appears to be no pound sign on this keyboard)? That would have been about the price of a small car or a semi-detached house in 1948. Today, one might pay GBP1500 (economy), a tenth of the price of a car or a hundreth the price of a house, and get there in a day or so, not a week of droning pistons and hot sweaty night stops. But, given the opportunity and a serviceable Connie, who wouldn't want to do it all again?