Hendrie's steam reverser on Class 1A 4-8-0 (ex Natal Government Railways)
Unknown author<span style="display: none;">Unknown author</span>
Espitalier, T.J.; Day, W.A.J. (1944). <i>The Locomotive in South Africa - A Brief History of Railway Development. Chapter III - Natal Government Railways</i> (Continued). South African Railways and Harbours Magazine, August 1944. p. 592