Analysis of information sources in references of the Wikipedia article "Victorian Railways Dd class" in English language version.
1948/51 - In response to the desire to reduce the number of un-economical mixed train services on lines where there was light traffic, to improve the standard of service provided, and in response to the uncertainties of coal supplies in the post war period; a significant number of additional railcars were purchased from Walkers of Wigan, England.
1948/51 - In response to the desire to reduce the number of un-economical mixed train services on lines where there was light traffic, to improve the standard of service provided, and in response to the uncertainties of coal supplies in the post war period; a significant number of additional railcars were purchased from Walkers of Wigan, England.
