WANTED- DRAWINGS OR GA's FOR 1920's/30's IMPERIAL AIRWAYS AIRLINER INSTRUMENT PANELS

I have some early Imperial Airways instruments and would be interested in making a suitable instrument panel to put them in.
Does anyone know where there are any suitable manufacturing drawings or accurate G.A’s from which a panel could be made ?.

I’m looking for such types as-
A.W ARGOSY, ATLANTA, ENSIGN.
DH 34, 50, HERCULESE.
BRISTOL TYPE 75.
HP W10, 42.
SHORT CALCUTTA.
ETC.

Bob T.