Wanted 3 types of Signals for my New Zealand Railway Route

[RolandBP]

Hi, I am part way through creating a railway route in New Zealand based around the early 1960's. There were 3 types of signals in operation at this time in the location of Palmerston North.
Lower Quadrant Semaphore, some were of the Somersault type.
3 aspect colour light signals.
Searchlight signals for CTC.

What routes can I find the best Searchlight signals in?
Also I need some of the Lower Quadrant Semaphore Signals that can be added individually to a mast and some masts that would suit the 3-aspect colour light signals.

Regards, Roland.