Hi Jihndee
Welcome to the sometimes mad world of PPRuNe.
If you can PM me a suitable email I will pass it on to the 78 Sqn Historian so he can get in touch with you.
One thing that puzzles me is that you say that your father-in-law was on Lancs?
I am not doubting that but 78 Sqn did not operate Lancs as far as I am aware?
Could he have been on the Halifax by any chance?
Regards
Wiz