Two answers I'm not sure of are:-
25Ac - "Tiny photo of Intelligence
staff in bed?" (8) M-C-O-O-
I guess the answer must be MICRODOT
but that's because of the tiny photo
part of the clue.
39Ac - "Summon a Gentleman dwelling
at Windsor" (4) P-G-
The summon part of the clue suggests
PAGE as the answer but that's all I
can currently parse!