197503 – Harvey, Niehoff & Burton – Signalling Developments on the Victorian Railways at Oakleigh: Figures

Figures for papers by Harvey, Niehoff & Burton:
https://irse.org.au/resource/1975-march-niehoff-signalling-developments-on-the-victorian-railway/
https://irse.org.au/resource/1975-march-harvey-signalling-developments-on-the-victorian-railways/
https://irse.org.au/resource/1975-march-burton-signalling-developments-on-the-victorian-railways/