Do you search for any daybill titles that you have have never found and just put in down to that the poster is rare? It also may be that the films were never released in Australia theatrically due not only to the films being banned but also for other reasons as well.
Some of the titles that fall into this category are ---'
The Night Of The Hunter
The Last Mile ( Mickey Rooney version )
Queen Of Outer Space
World Without End
Brides Of Dracula
The Fly series
The majority of the 1950's Bowery Boys & Bomba series from Monogram / Allied artists
and the list goes on.
It is a pity no paper of any sort exists for the classic The Night Of The Hunter due to the banning in Australian.