I came across this site
http://robertalfredjay.********.co.uk/ (for some reason Pprune doesn't like "blog spot" without the space so you'll have to replace the *s) whilst looking for something completely different (actually yachts built to train Luftwaffe navigators in the 30's).
He chronicles his father's experiences training and flying as a Flight Engineer. His logbook, record of service, even his 1250 are included. He has also researched other crew members from 75(NZ) Sqn at Mepal, and the squadron operations while his father was with them. With the end of hostilities in Europe, the crews took part in Baedeker trips - low flights over some of the squadron's targets to view the extent of the damage.
A link from there led to a 75(NZ) Squadron blog which includes a wealth of material.
https://75nzsquadron.wordpress.com/
Apologies if this has been posted previously.