Hello: Yes, I do have the exact dates and a copy of a letter Cule wrote about his his early life (the source of the information given here) but unfortunately it's back at my home in New Zealand. (I'm currently living in Asia.) The BMS issued two "resolutions" on W E Cule - one on his retirement and one on his death and these also have interesting information.
Regards
Philip

PS I'm still feeling my way round in Wikipedia - not sure if I can email you.