Yes.
Getting tricky here as info is money to many.
Try the Igor Sikorsky Institute. I think a Google should help. Failing that, PM me, I have a mate with a contact, but he's somewhere between NZ and the UK at the mo.
Or try British Pathe. (Note no link) This is also an educational site with free content - you'll have to be creative to track the desired footage down, but you'll engoy the search.
PM me for more by all means.
Cheers
James