I'm three and a bit years ahead of you and both my parents have been gone for some years, squeeze as much info out of your dad while you can, I mean generally and not just in respect to this. I had family who worked for De Havilland and others Handley Page, both factories were local where I grew up.Nice. You must be around my age (57). I just e-mailed my dad to ask him about where he was working in the Mossie factory. I'm sure I'll get a reply in the not too distant future. He was an engineer and likes technology so he is online.