Wow WHBM, thank you! I've been looking for these schedules as well. I've asked our local aviation museum (Aviodrome) about the route too and they've also provided me with some information about it, but not like the timetables that you've posted.
Would you also have the timetable for the winter route which they would have flown around these months? I know it should be more southern, via Santa Maria (Azores) and Sydney (Nova Scotia) or via Lisbon, Dakar, Natal and Paramaribo, although this last route was usually flown with a DC4 in the late 40's.
Regards,
Sander.