Looking for photo's showing 1930's aircraft being built

Can any one please point me in the right direction where I can find good clear photo’s, of aircraft being built during the 1930’s ?.
I am looking for close up photo’s which show the aircrafts structure, & also the cockpit area/instrument panels.
I have tried searching on the internet, but there are very few clear photo’s of the types I am looking for eg- HP Heyford, HP Harrow, Bristol Bombay, Fairey Hendon, Gloster Gauntlet, Vickers Wellesley etc.

Bob T.