This weeks article is from the New Zealand Railway Observer Volume 29, No’s 2 and 3 (Special Combined Issue) Winter/Spring, 1972 and is:

Locomotives and their Performance No. 27, Story of the “Df” The 18 year Diesel-Electric by K.I. Bullock. 

Article 29, Volume 29, No’s 2 and 3

Each week a new Article from early issues of the New Zealand Railway Observers will be featured. Previous articles can still be viewed via the Publications Tab and then Historical NZRO Articles (the bottom option under this tab).