Clint
Aircraft on picture '5' is interesting.
Looks very much like a DH.5
Only two digits visible, 35 and something in front which (if type is correct) has to be either a 9 or a B, making the serial number A935x or B35x.
Unfortunately such "Sherlockian" (can one use such a word??) deduction immediately runs into problem, since I cannot locate anything that fits....
Funny, it looks so much easier on TV....
Perhaps it is something totally different after all?
Pity the Jenny is not possible to ID, otherwise I agree with your deductions, even if I read the second HF 20 as A1233, but those 3s can be 5s as well in any combination you prefer!
I will start looking at the second album in a sec.
Really nice albums don't you think?
Cheers
Stig